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Finding the Fourth Proportional to 91,879.52, 126,791.36 and 51,592.80

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Solution

The fourth proportional to 91,879.52, 126,791.36 and 51,592.80 is: 71,196.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,879.52 : 126,791.36 = 51,592.80 : x
  2. Step 2: Convert to fraction form
    91,879.52/126,791.36 = 51,592.80/x
  3. Step 3: Cross multiply
    91,879.52x = 126,791.36 × 51,592.80
  4. Step 4: Simplify right side
    91,879.52x = 6,541,521,278.21
  5. Step 5: Solve for x
    x = 6,541,521,278.21/91,879.52
  6. Step 6: Final answer
    x = 71,196.73

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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.