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Finding the Fourth Proportional to 74,472.60, 102,737.94 and 65,983.38

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Solution

The fourth proportional to 74,472.60, 102,737.94 and 65,983.38 is: 91,026.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,472.60 : 102,737.94 = 65,983.38 : x
  2. Step 2: Convert to fraction form
    74,472.60/102,737.94 = 65,983.38/x
  3. Step 3: Cross multiply
    74,472.60x = 102,737.94 × 65,983.38
  4. Step 4: Simplify right side
    74,472.60x = 6,778,996,535.44
  5. Step 5: Solve for x
    x = 6,778,996,535.44/74,472.60
  6. Step 6: Final answer
    x = 91,026.72

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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.