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Finding the Fourth Proportional to 87,879.87, 131,780.03 and 27,891.05

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Solution

The fourth proportional to 87,879.87, 131,780.03 and 27,891.05 is: 41,823.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,879.87 : 131,780.03 = 27,891.05 : x
  2. Step 2: Convert to fraction form
    87,879.87/131,780.03 = 27,891.05/x
  3. Step 3: Cross multiply
    87,879.87x = 131,780.03 × 27,891.05
  4. Step 4: Simplify right side
    87,879.87x = 3,675,482,607.38
  5. Step 5: Solve for x
    x = 3,675,482,607.38/87,879.87
  6. Step 6: Final answer
    x = 41,823.94

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1.5x scale

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.