Home / 87,810.67-131,728.83-28,631.80

Finding the Fourth Proportional to 87,810.67, 131,728.83 and 28,631.80

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Solution

The fourth proportional to 87,810.67, 131,728.83 and 28,631.80 is: 42,951.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,810.67 : 131,728.83 = 28,631.80 : x
  2. Step 2: Convert to fraction form
    87,810.67/131,728.83 = 28,631.80/x
  3. Step 3: Cross multiply
    87,810.67x = 131,728.83 × 28,631.80
  4. Step 4: Simplify right side
    87,810.67x = 3,771,633,514.79
  5. Step 5: Solve for x
    x = 3,771,633,514.79/87,810.67
  6. Step 6: Final answer
    x = 42,951.88

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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.