Home / 82,191.06-123,292.11-28,876.56

Finding the Fourth Proportional to 82,191.06, 123,292.11 and 28,876.56

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Solution

The fourth proportional to 82,191.06, 123,292.11 and 28,876.56 is: 43,316.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,191.06 : 123,292.11 = 28,876.56 : x
  2. Step 2: Convert to fraction form
    82,191.06/123,292.11 = 28,876.56/x
  3. Step 3: Cross multiply
    82,191.06x = 123,292.11 × 28,876.56
  4. Step 4: Simplify right side
    82,191.06x = 3,560,252,011.94
  5. Step 5: Solve for x
    x = 3,560,252,011.94/82,191.06
  6. Step 6: Final answer
    x = 43,316.78

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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.