Home / 87,530.80-131,296.20-54,142.60

Finding the Fourth Proportional to 87,530.80, 131,296.20 and 54,142.60

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Solution

The fourth proportional to 87,530.80, 131,296.20 and 54,142.60 is: 81,213.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,530.80 : 131,296.20 = 54,142.60 : x
  2. Step 2: Convert to fraction form
    87,530.80/131,296.20 = 54,142.60/x
  3. Step 3: Cross multiply
    87,530.80x = 131,296.20 × 54,142.60
  4. Step 4: Simplify right side
    87,530.80x = 7,108,717,638.12
  5. Step 5: Solve for x
    x = 7,108,717,638.12/87,530.80
  6. Step 6: Final answer
    x = 81,213.90

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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.