Home / 87,942.62-131,912.09-21,383.09

Finding the Fourth Proportional to 87,942.62, 131,912.09 and 21,383.09

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Solution

The fourth proportional to 87,942.62, 131,912.09 and 21,383.09 is: 32,074.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,942.62 : 131,912.09 = 21,383.09 : x
  2. Step 2: Convert to fraction form
    87,942.62/131,912.09 = 21,383.09/x
  3. Step 3: Cross multiply
    87,942.62x = 131,912.09 × 21,383.09
  4. Step 4: Simplify right side
    87,942.62x = 2,820,687,326.08
  5. Step 5: Solve for x
    x = 2,820,687,326.08/87,942.62
  6. Step 6: Final answer
    x = 32,074.18

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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.