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Finding the Fourth Proportional to 71,337.60, 107,488.80 and 59,129.28

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Solution

The fourth proportional to 71,337.60, 107,488.80 and 59,129.28 is: 89,093.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,337.60 : 107,488.80 = 59,129.28 : x
  2. Step 2: Convert to fraction form
    71,337.60/107,488.80 = 59,129.28/x
  3. Step 3: Cross multiply
    71,337.60x = 107,488.80 × 59,129.28
  4. Step 4: Simplify right side
    71,337.60x = 6,355,735,352.06
  5. Step 5: Solve for x
    x = 6,355,735,352.06/71,337.60
  6. Step 6: Final answer
    x = 89,093.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.