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Finding the Fourth Proportional to 81,425.59, 112,375.56 and 45,621.97

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Solution

The fourth proportional to 81,425.59, 112,375.56 and 45,621.97 is: 62,962.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,425.59 : 112,375.56 = 45,621.97 : x
  2. Step 2: Convert to fraction form
    81,425.59/112,375.56 = 45,621.97/x
  3. Step 3: Cross multiply
    81,425.59x = 112,375.56 × 45,621.97
  4. Step 4: Simplify right side
    81,425.59x = 5,126,794,427.05
  5. Step 5: Solve for x
    x = 5,126,794,427.05/81,425.59
  6. Step 6: Final answer
    x = 62,962.94

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1.5x scale

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.