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Finding the Fourth Proportional to 91,800, 126,664.48 and 54,060.48

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Solution

The fourth proportional to 91,800, 126,664.48 and 54,060.48 is: 74,591.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,800 : 126,664.48 = 54,060.48 : x
  2. Step 2: Convert to fraction form
    91,800/126,664.48 = 54,060.48/x
  3. Step 3: Cross multiply
    91,800x = 126,664.48 × 54,060.48
  4. Step 4: Simplify right side
    91,800x = 6,847,542,587.75
  5. Step 5: Solve for x
    x = 6,847,542,587.75/91,800
  6. Step 6: Final answer
    x = 74,591.97

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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.