Home / 87,121.92-130,698.24-40,427.52

Finding the Fourth Proportional to 87,121.92, 130,698.24 and 40,427.52

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Solution

The fourth proportional to 87,121.92, 130,698.24 and 40,427.52 is: 60,648.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,121.92 : 130,698.24 = 40,427.52 : x
  2. Step 2: Convert to fraction form
    87,121.92/130,698.24 = 40,427.52/x
  3. Step 3: Cross multiply
    87,121.92x = 130,698.24 × 40,427.52
  4. Step 4: Simplify right side
    87,121.92x = 5,283,805,711.56
  5. Step 5: Solve for x
    x = 5,283,805,711.56/87,121.92
  6. Step 6: Final answer
    x = 60,648.41

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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.