Home / 80,381.43-120,573.17-55,414.80

Finding the Fourth Proportional to 80,381.43, 120,573.17 and 55,414.80

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Solution

The fourth proportional to 80,381.43, 120,573.17 and 55,414.80 is: 83,122.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,381.43 : 120,573.17 = 55,414.80 : x
  2. Step 2: Convert to fraction form
    80,381.43/120,573.17 = 55,414.80/x
  3. Step 3: Cross multiply
    80,381.43x = 120,573.17 × 55,414.80
  4. Step 4: Simplify right side
    80,381.43x = 6,681,537,823.84
  5. Step 5: Solve for x
    x = 6,681,537,823.84/80,381.43
  6. Step 6: Final answer
    x = 83,122.90

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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.