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Finding the Fourth Proportional to 80,377.56, 120,472.92 and 30,425.76

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Solution

The fourth proportional to 80,377.56, 120,472.92 and 30,425.76 is: 45,603.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,377.56 : 120,472.92 = 30,425.76 : x
  2. Step 2: Convert to fraction form
    80,377.56/120,472.92 = 30,425.76/x
  3. Step 3: Cross multiply
    80,377.56x = 120,472.92 × 30,425.76
  4. Step 4: Simplify right side
    80,377.56x = 3,665,480,150.42
  5. Step 5: Solve for x
    x = 3,665,480,150.42/80,377.56
  6. Step 6: Final answer
    x = 45,603.28

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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.