Home / 51,540.71-71,127.92-49,178.75

Finding the Fourth Proportional to 51,540.71, 71,127.92 and 49,178.75

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Solution

The fourth proportional to 51,540.71, 71,127.92 and 49,178.75 is: 67,868.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,540.71 : 71,127.92 = 49,178.75 : x
  2. Step 2: Convert to fraction form
    51,540.71/71,127.92 = 49,178.75/x
  3. Step 3: Cross multiply
    51,540.71x = 71,127.92 × 49,178.75
  4. Step 4: Simplify right side
    51,540.71x = 3,497,981,963.01
  5. Step 5: Solve for x
    x = 3,497,981,963.01/51,540.71
  6. Step 6: Final answer
    x = 67,868.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.