Home / 87,441.60-131,320.80-76,555.20

Finding the Fourth Proportional to 87,441.60, 131,320.80 and 76,555.20

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Solution

The fourth proportional to 87,441.60, 131,320.80 and 76,555.20 is: 114,971.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,441.60 : 131,320.80 = 76,555.20 : x
  2. Step 2: Convert to fraction form
    87,441.60/131,320.80 = 76,555.20/x
  3. Step 3: Cross multiply
    87,441.60x = 131,320.80 × 76,555.20
  4. Step 4: Simplify right side
    87,441.60x = 10,053,290,108.16
  5. Step 5: Solve for x
    x = 10,053,290,108.16/87,441.60
  6. Step 6: Final answer
    x = 114,971.48

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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.