Home / 87,613.57-120,960.30-57,015.82

Finding the Fourth Proportional to 87,613.57, 120,960.30 and 57,015.82

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Solution

The fourth proportional to 87,613.57, 120,960.30 and 57,015.82 is: 78,716.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,613.57 : 120,960.30 = 57,015.82 : x
  2. Step 2: Convert to fraction form
    87,613.57/120,960.30 = 57,015.82/x
  3. Step 3: Cross multiply
    87,613.57x = 120,960.30 × 57,015.82
  4. Step 4: Simplify right side
    87,613.57x = 6,896,650,691.95
  5. Step 5: Solve for x
    x = 6,896,650,691.95/87,613.57
  6. Step 6: Final answer
    x = 78,716.70

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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.