Home / 54,147.90-81,213.65-18,614.62

Finding the Fourth Proportional to 54,147.90, 81,213.65 and 18,614.62

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Solution

The fourth proportional to 54,147.90, 81,213.65 and 18,614.62 is: 27,919.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,147.90 : 81,213.65 = 18,614.62 : x
  2. Step 2: Convert to fraction form
    54,147.90/81,213.65 = 18,614.62/x
  3. Step 3: Cross multiply
    54,147.90x = 81,213.65 × 18,614.62
  4. Step 4: Simplify right side
    54,147.90x = 1,511,761,233.56
  5. Step 5: Solve for x
    x = 1,511,761,233.56/54,147.90
  6. Step 6: Final answer
    x = 27,919.11

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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.