Home / 87,920.32-121,330.11-51,614.66

Finding the Fourth Proportional to 87,920.32, 121,330.11 and 51,614.66

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Solution

The fourth proportional to 87,920.32, 121,330.11 and 51,614.66 is: 71,228.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,920.32 : 121,330.11 = 51,614.66 : x
  2. Step 2: Convert to fraction form
    87,920.32/121,330.11 = 51,614.66/x
  3. Step 3: Cross multiply
    87,920.32x = 121,330.11 × 51,614.66
  4. Step 4: Simplify right side
    87,920.32x = 6,262,412,375.41
  5. Step 5: Solve for x
    x = 6,262,412,375.41/87,920.32
  6. Step 6: Final answer
    x = 71,228.27

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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.