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Finding the Fourth Proportional to 74,472.87, 102,772.36 and 40,481.35

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Solution

The fourth proportional to 74,472.87, 102,772.36 and 40,481.35 is: 55,864.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,472.87 : 102,772.36 = 40,481.35 : x
  2. Step 2: Convert to fraction form
    74,472.87/102,772.36 = 40,481.35/x
  3. Step 3: Cross multiply
    74,472.87x = 102,772.36 × 40,481.35
  4. Step 4: Simplify right side
    74,472.87x = 4,160,363,673.08
  5. Step 5: Solve for x
    x = 4,160,363,673.08/74,472.87
  6. Step 6: Final answer
    x = 55,864.15

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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.