Home / 87,650.40-131,324.40-40,807.20

Finding the Fourth Proportional to 87,650.40, 131,324.40 and 40,807.20

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Solution

The fourth proportional to 87,650.40, 131,324.40 and 40,807.20 is: 61,140.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,650.40 : 131,324.40 = 40,807.20 : x
  2. Step 2: Convert to fraction form
    87,650.40/131,324.40 = 40,807.20/x
  3. Step 3: Cross multiply
    87,650.40x = 131,324.40 × 40,807.20
  4. Step 4: Simplify right side
    87,650.40x = 5,358,981,055.68
  5. Step 5: Solve for x
    x = 5,358,981,055.68/87,650.40
  6. Step 6: Final answer
    x = 61,140.41

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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.