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Finding the Fourth Proportional to 71,565.75, 98,757.45 and 39,736.68

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Solution

The fourth proportional to 71,565.75, 98,757.45 and 39,736.68 is: 54,834.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,565.75 : 98,757.45 = 39,736.68 : x
  2. Step 2: Convert to fraction form
    71,565.75/98,757.45 = 39,736.68/x
  3. Step 3: Cross multiply
    71,565.75x = 98,757.45 × 39,736.68
  4. Step 4: Simplify right side
    71,565.75x = 3,924,293,188.27
  5. Step 5: Solve for x
    x = 3,924,293,188.27/71,565.75
  6. Step 6: Final answer
    x = 54,834.79

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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.