Home / 87,661.50-131,509.53-28,498.62

Finding the Fourth Proportional to 87,661.50, 131,509.53 and 28,498.62

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Solution

The fourth proportional to 87,661.50, 131,509.53 and 28,498.62 is: 42,753.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,661.50 : 131,509.53 = 28,498.62 : x
  2. Step 2: Convert to fraction form
    87,661.50/131,509.53 = 28,498.62/x
  3. Step 3: Cross multiply
    87,661.50x = 131,509.53 × 28,498.62
  4. Step 4: Simplify right side
    87,661.50x = 3,747,840,121.85
  5. Step 5: Solve for x
    x = 3,747,840,121.85/87,661.50
  6. Step 6: Final answer
    x = 42,753.55

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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.