Home / 83,474.38-125,216.13-21,145.42

Finding the Fourth Proportional to 83,474.38, 125,216.13 and 21,145.42

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Solution

The fourth proportional to 83,474.38, 125,216.13 and 21,145.42 is: 31,719.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,474.38 : 125,216.13 = 21,145.42 : x
  2. Step 2: Convert to fraction form
    83,474.38/125,216.13 = 21,145.42/x
  3. Step 3: Cross multiply
    83,474.38x = 125,216.13 × 21,145.42
  4. Step 4: Simplify right side
    83,474.38x = 2,647,747,659.62
  5. Step 5: Solve for x
    x = 2,647,747,659.62/83,474.38
  6. Step 6: Final answer
    x = 31,719.29

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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.