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Finding the Fourth Proportional to 91,879.52, 126,782.21 and 51,593.15

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Solution

The fourth proportional to 91,879.52, 126,782.21 and 51,593.15 is: 71,192.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,879.52 : 126,782.21 = 51,593.15 : x
  2. Step 2: Convert to fraction form
    91,879.52/126,782.21 = 51,593.15/x
  3. Step 3: Cross multiply
    91,879.52x = 126,782.21 × 51,593.15
  4. Step 4: Simplify right side
    91,879.52x = 6,541,094,023.80
  5. Step 5: Solve for x
    x = 6,541,094,023.80/91,879.52
  6. Step 6: Final answer
    x = 71,192.08

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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.