Home / 87,542.40-131,467.20-84,777.60

Finding the Fourth Proportional to 87,542.40, 131,467.20 and 84,777.60

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Solution

The fourth proportional to 87,542.40, 131,467.20 and 84,777.60 is: 127,315.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,542.40 : 131,467.20 = 84,777.60 : x
  2. Step 2: Convert to fraction form
    87,542.40/131,467.20 = 84,777.60/x
  3. Step 3: Cross multiply
    87,542.40x = 131,467.20 × 84,777.60
  4. Step 4: Simplify right side
    87,542.40x = 11,145,473,694.72
  5. Step 5: Solve for x
    x = 11,145,473,694.72/87,542.40
  6. Step 6: Final answer
    x = 127,315.15

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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.