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Finding the Fourth Proportional to 80,373.70, 120,561.48 and 38,257.72

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Solution

The fourth proportional to 80,373.70, 120,561.48 and 38,257.72 is: 57,387.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,373.70 : 120,561.48 = 38,257.72 : x
  2. Step 2: Convert to fraction form
    80,373.70/120,561.48 = 38,257.72/x
  3. Step 3: Cross multiply
    80,373.70x = 120,561.48 × 38,257.72
  4. Step 4: Simplify right side
    80,373.70x = 4,612,407,344.63
  5. Step 5: Solve for x
    x = 4,612,407,344.63/80,373.70
  6. Step 6: Final answer
    x = 57,387.02

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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.