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Finding the Fourth Proportional to 62,469.92, 86,236.64 and 39,839.28

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Solution

The fourth proportional to 62,469.92, 86,236.64 and 39,839.28 is: 54,996.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,469.92 : 86,236.64 = 39,839.28 : x
  2. Step 2: Convert to fraction form
    62,469.92/86,236.64 = 39,839.28/x
  3. Step 3: Cross multiply
    62,469.92x = 86,236.64 × 39,839.28
  4. Step 4: Simplify right side
    62,469.92x = 3,435,605,647.22
  5. Step 5: Solve for x
    x = 3,435,605,647.22/62,469.92
  6. Step 6: Final answer
    x = 54,996.16

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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.