Home / 87,820.83-121,162.89-49,575.87

Finding the Fourth Proportional to 87,820.83, 121,162.89 and 49,575.87

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Solution

The fourth proportional to 87,820.83, 121,162.89 and 49,575.87 is: 68,397.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,820.83 : 121,162.89 = 49,575.87 : x
  2. Step 2: Convert to fraction form
    87,820.83/121,162.89 = 49,575.87/x
  3. Step 3: Cross multiply
    87,820.83x = 121,162.89 × 49,575.87
  4. Step 4: Simplify right side
    87,820.83x = 6,006,755,683.46
  5. Step 5: Solve for x
    x = 6,006,755,683.46/87,820.83
  6. Step 6: Final answer
    x = 68,397.85

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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.