Math Problem Statement

What is the accumulated value of periodic deposits of $30 at the beginning of every quarter for 17 years if the interest rate is 4.03% compounded quarterly?

Solution

To find the accumulated value of periodic deposits at the beginning of every quarter, we can use the future value of an annuity due formula. The formula is:

FV=P×((1+r)n1r)×(1+r)FV = P \times \left( \frac{(1 + r)^n - 1}{r} \right) \times (1 + r)

Where:

  • FVFV is the future value of the annuity due.
  • PP is the periodic deposit.
  • rr is the interest rate per period.
  • nn is the total number of deposits.

Given:

  • P=30P = 30 (the amount of each deposit)
  • Annual interest rate = 4.03%, so the quarterly interest rate r=4.03%4=0.010075r = \frac{4.03\%}{4} = 0.010075
  • Total number of years = 17, so total number of quarters n=17×4=68n = 17 \times 4 = 68

Plugging in the values:

  1. Calculate rr: r=4.03100÷4=0.010075r = \frac{4.03}{100} \div 4 = 0.010075

  2. Calculate nn: n=17×4=68n = 17 \times 4 = 68

  3. Calculate FVFV: FV=30×((1+0.010075)6810.010075)×(1+0.010075)FV = 30 \times \left( \frac{(1 + 0.010075)^{68} - 1}{0.010075} \right) \times (1 + 0.010075)

Calculating (1+0.010075)68(1 + 0.010075)^{68}: (1.010075)681.8983(1.010075)^{68} \approx 1.8983

Now substituting: FV=30×(1.898310.010075)×1.010075FV = 30 \times \left( \frac{1.8983 - 1}{0.010075} \right) \times 1.010075 =30×(0.89830.010075)×1.010075= 30 \times \left( \frac{0.8983}{0.010075} \right) \times 1.010075 =30×89.1×1.01007530×89.932697.90= 30 \times 89.1 \times 1.010075 \approx 30 \times 89.93 \approx 2697.90

Thus, the accumulated value of the periodic deposits is approximately $2,697.90.

Would you like to explore more about this calculation or related concepts? Here are some questions you might consider:

  1. How does changing the interest rate affect the accumulated value?
  2. What would be the value if the deposits were made at the end of each period instead of the beginning?
  3. How does the frequency of deposits influence the total amount accumulated?
  4. Can you explain the difference between simple interest and compound interest?
  5. What are other investment strategies that could yield a similar or higher return?

Tip: Regularly reviewing your investment strategy and the interest rates can help optimize your savings over time.

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Math Problem Analysis

Mathematical Concepts

Finance
Annuities
Compound Interest

Formulas

Future Value of Annuity Due: FV = P × ((1 + r)^n - 1) / r × (1 + r)

Theorems

Future Value of Annuity Due Theorem

Suitable Grade Level

Grades 10-12