Home / 87,742.31-121,099.27-49,512.69

Finding the Fourth Proportional to 87,742.31, 121,099.27 and 49,512.69

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Solution

The fourth proportional to 87,742.31, 121,099.27 and 49,512.69 is: 68,335.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,742.31 : 121,099.27 = 49,512.69 : x
  2. Step 2: Convert to fraction form
    87,742.31/121,099.27 = 49,512.69/x
  3. Step 3: Cross multiply
    87,742.31x = 121,099.27 × 49,512.69
  4. Step 4: Simplify right side
    87,742.31x = 5,995,950,614.74
  5. Step 5: Solve for x
    x = 5,995,950,614.74/87,742.31
  6. Step 6: Final answer
    x = 68,335.91

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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.