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Finding the Fourth Proportional to 91,801.92, 137,355.36 and 54,382.08

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Solution

The fourth proportional to 91,801.92, 137,355.36 and 54,382.08 is: 81,367.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,801.92 : 137,355.36 = 54,382.08 : x
  2. Step 2: Convert to fraction form
    91,801.92/137,355.36 = 54,382.08/x
  3. Step 3: Cross multiply
    91,801.92x = 137,355.36 × 54,382.08
  4. Step 4: Simplify right side
    91,801.92x = 7,469,670,175.95
  5. Step 5: Solve for x
    x = 7,469,670,175.95/91,801.92
  6. Step 6: Final answer
    x = 81,367.25

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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.