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Finding the Fourth Proportional to 81,414.80, 122,122.20 and 34,672.40

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Solution

The fourth proportional to 81,414.80, 122,122.20 and 34,672.40 is: 52,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,414.80 : 122,122.20 = 34,672.40 : x
  2. Step 2: Convert to fraction form
    81,414.80/122,122.20 = 34,672.40/x
  3. Step 3: Cross multiply
    81,414.80x = 122,122.20 × 34,672.40
  4. Step 4: Simplify right side
    81,414.80x = 4,234,269,767.28
  5. Step 5: Solve for x
    x = 4,234,269,767.28/81,414.80
  6. Step 6: Final answer
    x = 52,008.60

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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.