Home / 87,915.12-131,779.71-28,734.90

Finding the Fourth Proportional to 87,915.12, 131,779.71 and 28,734.90

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Solution

The fourth proportional to 87,915.12, 131,779.71 and 28,734.90 is: 43,071.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,915.12 : 131,779.71 = 28,734.90 : x
  2. Step 2: Convert to fraction form
    87,915.12/131,779.71 = 28,734.90/x
  3. Step 3: Cross multiply
    87,915.12x = 131,779.71 × 28,734.90
  4. Step 4: Simplify right side
    87,915.12x = 3,786,676,788.88
  5. Step 5: Solve for x
    x = 3,786,676,788.88/87,915.12
  6. Step 6: Final answer
    x = 43,071.96

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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.