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Finding the Fourth Proportional to 85,591.27, 128,299.42 and 29,414.53

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Solution

The fourth proportional to 85,591.27, 128,299.42 and 29,414.53 is: 44,091.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,591.27 : 128,299.42 = 29,414.53 : x
  2. Step 2: Convert to fraction form
    85,591.27/128,299.42 = 29,414.53/x
  3. Step 3: Cross multiply
    85,591.27x = 128,299.42 × 29,414.53
  4. Step 4: Simplify right side
    85,591.27x = 3,773,867,138.57
  5. Step 5: Solve for x
    x = 3,773,867,138.57/85,591.27
  6. Step 6: Final answer
    x = 44,091.73

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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.