Home / 87,482.30-131,381.53-80,449.34

Finding the Fourth Proportional to 87,482.30, 131,381.53 and 80,449.34

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Solution

The fourth proportional to 87,482.30, 131,381.53 and 80,449.34 is: 120,819.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,482.30 : 131,381.53 = 80,449.34 : x
  2. Step 2: Convert to fraction form
    87,482.30/131,381.53 = 80,449.34/x
  3. Step 3: Cross multiply
    87,482.30x = 131,381.53 × 80,449.34
  4. Step 4: Simplify right side
    87,482.30x = 10,569,556,518.66
  5. Step 5: Solve for x
    x = 10,569,556,518.66/87,482.30
  6. Step 6: Final answer
    x = 120,819.38

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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.