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Finding the Fourth Proportional to 62,686.72, 86,513.28 and 34,397.92

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Solution

The fourth proportional to 62,686.72, 86,513.28 and 34,397.92 is: 47,472.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,686.72 : 86,513.28 = 34,397.92 : x
  2. Step 2: Convert to fraction form
    62,686.72/86,513.28 = 34,397.92/x
  3. Step 3: Cross multiply
    62,686.72x = 86,513.28 × 34,397.92
  4. Step 4: Simplify right side
    62,686.72x = 2,975,876,884.38
  5. Step 5: Solve for x
    x = 2,975,876,884.38/62,686.72
  6. Step 6: Final answer
    x = 47,472.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.