Home / 82,400.12-123,472.97-55,641.24

Finding the Fourth Proportional to 82,400.12, 123,472.97 and 55,641.24

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Solution

The fourth proportional to 82,400.12, 123,472.97 and 55,641.24 is: 83,375.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,400.12 : 123,472.97 = 55,641.24 : x
  2. Step 2: Convert to fraction form
    82,400.12/123,472.97 = 55,641.24/x
  3. Step 3: Cross multiply
    82,400.12x = 123,472.97 × 55,641.24
  4. Step 4: Simplify right side
    82,400.12x = 6,870,189,339.61
  5. Step 5: Solve for x
    x = 6,870,189,339.61/82,400.12
  6. Step 6: Final answer
    x = 83,375.96

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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.