Home / 87,526.80-131,290.20-54,138.60

Finding the Fourth Proportional to 87,526.80, 131,290.20 and 54,138.60

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Solution

The fourth proportional to 87,526.80, 131,290.20 and 54,138.60 is: 81,207.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,526.80 : 131,290.20 = 54,138.60 : x
  2. Step 2: Convert to fraction form
    87,526.80/131,290.20 = 54,138.60/x
  3. Step 3: Cross multiply
    87,526.80x = 131,290.20 × 54,138.60
  4. Step 4: Simplify right side
    87,526.80x = 7,107,867,621.72
  5. Step 5: Solve for x
    x = 7,107,867,621.72/87,526.80
  6. Step 6: Final answer
    x = 81,207.90

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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.