Home / 87,779.82-131,638.61-31,604.86

Finding the Fourth Proportional to 87,779.82, 131,638.61 and 31,604.86

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Solution

The fourth proportional to 87,779.82, 131,638.61 and 31,604.86 is: 47,396.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,779.82 : 131,638.61 = 31,604.86 : x
  2. Step 2: Convert to fraction form
    87,779.82/131,638.61 = 31,604.86/x
  3. Step 3: Cross multiply
    87,779.82x = 131,638.61 × 31,604.86
  4. Step 4: Simplify right side
    87,779.82x = 4,160,419,839.64
  5. Step 5: Solve for x
    x = 4,160,419,839.64/87,779.82
  6. Step 6: Final answer
    x = 47,396.09

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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.