Home / 87,876.93-131,788.13-31,709.75

Finding the Fourth Proportional to 87,876.93, 131,788.13 and 31,709.75

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Solution

The fourth proportional to 87,876.93, 131,788.13 and 31,709.75 is: 47,554.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,876.93 : 131,788.13 = 31,709.75 : x
  2. Step 2: Convert to fraction form
    87,876.93/131,788.13 = 31,709.75/x
  3. Step 3: Cross multiply
    87,876.93x = 131,788.13 × 31,709.75
  4. Step 4: Simplify right side
    87,876.93x = 4,178,967,837.78
  5. Step 5: Solve for x
    x = 4,178,967,837.78/87,876.93
  6. Step 6: Final answer
    x = 47,554.78

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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.