Home / 87,403.70-131,204.10-57,879.20

Finding the Fourth Proportional to 87,403.70, 131,204.10 and 57,879.20

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Solution

The fourth proportional to 87,403.70, 131,204.10 and 57,879.20 is: 86,884.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,403.70 : 131,204.10 = 57,879.20 : x
  2. Step 2: Convert to fraction form
    87,403.70/131,204.10 = 57,879.20/x
  3. Step 3: Cross multiply
    87,403.70x = 131,204.10 × 57,879.20
  4. Step 4: Simplify right side
    87,403.70x = 7,593,988,344.72
  5. Step 5: Solve for x
    x = 7,593,988,344.72/87,403.70
  6. Step 6: Final answer
    x = 86,884.06

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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.