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Finding the Fourth Proportional to 71,791.78, 107,424.33 and 59,916.22

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Solution

The fourth proportional to 71,791.78, 107,424.33 and 59,916.22 is: 89,654.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,791.78 : 107,424.33 = 59,916.22 : x
  2. Step 2: Convert to fraction form
    71,791.78/107,424.33 = 59,916.22/x
  3. Step 3: Cross multiply
    71,791.78x = 107,424.33 × 59,916.22
  4. Step 4: Simplify right side
    71,791.78x = 6,436,459,789.63
  5. Step 5: Solve for x
    x = 6,436,459,789.63/71,791.78
  6. Step 6: Final answer
    x = 89,654.55

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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.