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Finding the Fourth Proportional to 65,331.56, 97,988.12 and 20,952.56

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Solution

The fourth proportional to 65,331.56, 97,988.12 and 20,952.56 is: 31,425.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,331.56 : 97,988.12 = 20,952.56 : x
  2. Step 2: Convert to fraction form
    65,331.56/97,988.12 = 20,952.56/x
  3. Step 3: Cross multiply
    65,331.56x = 97,988.12 × 20,952.56
  4. Step 4: Simplify right side
    65,331.56x = 2,053,101,526.03
  5. Step 5: Solve for x
    x = 2,053,101,526.03/65,331.56
  6. Step 6: Final answer
    x = 31,425.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.