Home / 87,639.80-131,505.60-40,269.20

Finding the Fourth Proportional to 87,639.80, 131,505.60 and 40,269.20

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Solution

The fourth proportional to 87,639.80, 131,505.60 and 40,269.20 is: 60,424.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,639.80 : 131,505.60 = 40,269.20 : x
  2. Step 2: Convert to fraction form
    87,639.80/131,505.60 = 40,269.20/x
  3. Step 3: Cross multiply
    87,639.80x = 131,505.60 × 40,269.20
  4. Step 4: Simplify right side
    87,639.80x = 5,295,625,307.52
  5. Step 5: Solve for x
    x = 5,295,625,307.52/87,639.80
  6. Step 6: Final answer
    x = 60,424.89

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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.