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Finding the Fourth Proportional to 80,552.39, 120,849.10 and 56,906.15

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Solution

The fourth proportional to 80,552.39, 120,849.10 and 56,906.15 is: 85,373.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,552.39 : 120,849.10 = 56,906.15 : x
  2. Step 2: Convert to fraction form
    80,552.39/120,849.10 = 56,906.15/x
  3. Step 3: Cross multiply
    80,552.39x = 120,849.10 × 56,906.15
  4. Step 4: Simplify right side
    80,552.39x = 6,877,056,265.45
  5. Step 5: Solve for x
    x = 6,877,056,265.45/80,552.39
  6. Step 6: Final answer
    x = 85,373.71

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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.