Home / 87,619.20-131,319-37,639.92

Finding the Fourth Proportional to 87,619.20, 131,319 and 37,639.92

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Solution

The fourth proportional to 87,619.20, 131,319 and 37,639.92 is: 56,412.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,619.20 : 131,319 = 37,639.92 : x
  2. Step 2: Convert to fraction form
    87,619.20/131,319 = 37,639.92/x
  3. Step 3: Cross multiply
    87,619.20x = 131,319 × 37,639.92
  4. Step 4: Simplify right side
    87,619.20x = 4,942,836,654.48
  5. Step 5: Solve for x
    x = 4,942,836,654.48/87,619.20
  6. Step 6: Final answer
    x = 56,412.71

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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.