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Finding the Fourth Proportional to 66,975.56, 100,481.82 and 54,464.60

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Solution

The fourth proportional to 66,975.56, 100,481.82 and 54,464.60 is: 81,711.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,975.56 : 100,481.82 = 54,464.60 : x
  2. Step 2: Convert to fraction form
    66,975.56/100,481.82 = 54,464.60/x
  3. Step 3: Cross multiply
    66,975.56x = 100,481.82 × 54,464.60
  4. Step 4: Simplify right side
    66,975.56x = 5,472,702,133.57
  5. Step 5: Solve for x
    x = 5,472,702,133.57/66,975.56
  6. Step 6: Final answer
    x = 81,711.93

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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.