Home / 81,174.72-121,764.17-38,470.13

Finding the Fourth Proportional to 81,174.72, 121,764.17 and 38,470.13

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Solution

The fourth proportional to 81,174.72, 121,764.17 and 38,470.13 is: 57,706.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,174.72 : 121,764.17 = 38,470.13 : x
  2. Step 2: Convert to fraction form
    81,174.72/121,764.17 = 38,470.13/x
  3. Step 3: Cross multiply
    81,174.72x = 121,764.17 × 38,470.13
  4. Step 4: Simplify right side
    81,174.72x = 4,684,282,648.07
  5. Step 5: Solve for x
    x = 4,684,282,648.07/81,174.72
  6. Step 6: Final answer
    x = 57,706.18

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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.