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Finding the Fourth Proportional to 80,471.76, 120,680.29 and 27,868.94

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Solution

The fourth proportional to 80,471.76, 120,680.29 and 27,868.94 is: 41,793.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,471.76 : 120,680.29 = 27,868.94 : x
  2. Step 2: Convert to fraction form
    80,471.76/120,680.29 = 27,868.94/x
  3. Step 3: Cross multiply
    80,471.76x = 120,680.29 × 27,868.94
  4. Step 4: Simplify right side
    80,471.76x = 3,363,231,761.19
  5. Step 5: Solve for x
    x = 3,363,231,761.19/80,471.76
  6. Step 6: Final answer
    x = 41,793.94

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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.