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Finding the Fourth Proportional to 80,589.60, 120,766.08 and 40,553.52

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Solution

The fourth proportional to 80,589.60, 120,766.08 and 40,553.52 is: 60,770.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,589.60 : 120,766.08 = 40,553.52 : x
  2. Step 2: Convert to fraction form
    80,589.60/120,766.08 = 40,553.52/x
  3. Step 3: Cross multiply
    80,589.60x = 120,766.08 × 40,553.52
  4. Step 4: Simplify right side
    80,589.60x = 4,897,489,640.60
  5. Step 5: Solve for x
    x = 4,897,489,640.60/80,589.60
  6. Step 6: Final answer
    x = 60,770.74

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1.5x scale

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.