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Finding the Fourth Proportional to 71,781.69, 107,593.21 and 29,638.54

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Solution

The fourth proportional to 71,781.69, 107,593.21 and 29,638.54 is: 44,425.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,781.69 : 107,593.21 = 29,638.54 : x
  2. Step 2: Convert to fraction form
    71,781.69/107,593.21 = 29,638.54/x
  3. Step 3: Cross multiply
    71,781.69x = 107,593.21 × 29,638.54
  4. Step 4: Simplify right side
    71,781.69x = 3,188,905,829.85
  5. Step 5: Solve for x
    x = 3,188,905,829.85/71,781.69
  6. Step 6: Final answer
    x = 44,425.06

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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.