Home / 80,786.72-121,186.56-28,195.04

Finding the Fourth Proportional to 80,786.72, 121,186.56 and 28,195.04

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Solution

The fourth proportional to 80,786.72, 121,186.56 and 28,195.04 is: 42,294.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,786.72 : 121,186.56 = 28,195.04 : x
  2. Step 2: Convert to fraction form
    80,786.72/121,186.56 = 28,195.04/x
  3. Step 3: Cross multiply
    80,786.72x = 121,186.56 × 28,195.04
  4. Step 4: Simplify right side
    80,786.72x = 3,416,859,906.66
  5. Step 5: Solve for x
    x = 3,416,859,906.66/80,786.72
  6. Step 6: Final answer
    x = 42,294.82

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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.