Home / 87,779.06-131,410.11-54,391.82

Finding the Fourth Proportional to 87,779.06, 131,410.11 and 54,391.82

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Solution

The fourth proportional to 87,779.06, 131,410.11 and 54,391.82 is: 81,427.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,779.06 : 131,410.11 = 54,391.82 : x
  2. Step 2: Convert to fraction form
    87,779.06/131,410.11 = 54,391.82/x
  3. Step 3: Cross multiply
    87,779.06x = 131,410.11 × 54,391.82
  4. Step 4: Simplify right side
    87,779.06x = 7,147,635,049.30
  5. Step 5: Solve for x
    x = 7,147,635,049.30/87,779.06
  6. Step 6: Final answer
    x = 81,427.56

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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.