Home / 87,613.96-120,905.22-49,375.40

Finding the Fourth Proportional to 87,613.96, 120,905.22 and 49,375.40

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Solution

The fourth proportional to 87,613.96, 120,905.22 and 49,375.40 is: 68,136.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,613.96 : 120,905.22 = 49,375.40 : x
  2. Step 2: Convert to fraction form
    87,613.96/120,905.22 = 49,375.40/x
  3. Step 3: Cross multiply
    87,613.96x = 120,905.22 × 49,375.40
  4. Step 4: Simplify right side
    87,613.96x = 5,969,743,599.59
  5. Step 5: Solve for x
    x = 5,969,743,599.59/87,613.96
  6. Step 6: Final answer
    x = 68,136.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.