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Finding the Fourth Proportional to 78,737.57, 108,761.57 and 58,360.94

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Solution

The fourth proportional to 78,737.57, 108,761.57 and 58,360.94 is: 80,614.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,737.57 : 108,761.57 = 58,360.94 : x
  2. Step 2: Convert to fraction form
    78,737.57/108,761.57 = 58,360.94/x
  3. Step 3: Cross multiply
    78,737.57x = 108,761.57 × 58,360.94
  4. Step 4: Simplify right side
    78,737.57x = 6,347,427,252.17
  5. Step 5: Solve for x
    x = 6,347,427,252.17/78,737.57
  6. Step 6: Final answer
    x = 80,614.98

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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.