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Finding the Fourth Proportional to 80,763.70, 121,079.31 and 36,377.14

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Solution

The fourth proportional to 80,763.70, 121,079.31 and 36,377.14 is: 54,535.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,763.70 : 121,079.31 = 36,377.14 : x
  2. Step 2: Convert to fraction form
    80,763.70/121,079.31 = 36,377.14/x
  3. Step 3: Cross multiply
    80,763.70x = 121,079.31 × 36,377.14
  4. Step 4: Simplify right side
    80,763.70x = 4,404,519,010.97
  5. Step 5: Solve for x
    x = 4,404,519,010.97/80,763.70
  6. Step 6: Final answer
    x = 54,535.87

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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.