Home / 87,649.38-131,684.16-56,121.12

Finding the Fourth Proportional to 87,649.38, 131,684.16 and 56,121.12

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Solution

The fourth proportional to 87,649.38, 131,684.16 and 56,121.12 is: 84,316.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,649.38 : 131,684.16 = 56,121.12 : x
  2. Step 2: Convert to fraction form
    87,649.38/131,684.16 = 56,121.12/x
  3. Step 3: Cross multiply
    87,649.38x = 131,684.16 × 56,121.12
  4. Step 4: Simplify right side
    87,649.38x = 7,390,262,545.46
  5. Step 5: Solve for x
    x = 7,390,262,545.46/87,649.38
  6. Step 6: Final answer
    x = 84,316.20

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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.