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Finding the Fourth Proportional to 87,512.80, 131,074.80 and 75,848.80

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Solution

The fourth proportional to 87,512.80, 131,074.80 and 75,848.80 is: 113,604.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,512.80 : 131,074.80 = 75,848.80 : x
  2. Step 2: Convert to fraction form
    87,512.80/131,074.80 = 75,848.80/x
  3. Step 3: Cross multiply
    87,512.80x = 131,074.80 × 75,848.80
  4. Step 4: Simplify right side
    87,512.80x = 9,941,866,290.24
  5. Step 5: Solve for x
    x = 9,941,866,290.24/87,512.80
  6. Step 6: Final answer
    x = 113,604.71

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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.