Home / 87,625.20-131,405.40-28,462.80

Finding the Fourth Proportional to 87,625.20, 131,405.40 and 28,462.80

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Solution

The fourth proportional to 87,625.20, 131,405.40 and 28,462.80 is: 42,683.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,625.20 : 131,405.40 = 28,462.80 : x
  2. Step 2: Convert to fraction form
    87,625.20/131,405.40 = 28,462.80/x
  3. Step 3: Cross multiply
    87,625.20x = 131,405.40 × 28,462.80
  4. Step 4: Simplify right side
    87,625.20x = 3,740,165,619.12
  5. Step 5: Solve for x
    x = 3,740,165,619.12/87,625.20
  6. Step 6: Final answer
    x = 42,683.68

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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.