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Finding the Fourth Proportional to 84,589.82, 126,884.72 and 25,425.54

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Solution

The fourth proportional to 84,589.82, 126,884.72 and 25,425.54 is: 38,138.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,589.82 : 126,884.72 = 25,425.54 : x
  2. Step 2: Convert to fraction form
    84,589.82/126,884.72 = 25,425.54/x
  3. Step 3: Cross multiply
    84,589.82x = 126,884.72 × 25,425.54
  4. Step 4: Simplify right side
    84,589.82x = 3,226,112,523.75
  5. Step 5: Solve for x
    x = 3,226,112,523.75/84,589.82
  6. Step 6: Final answer
    x = 38,138.31

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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.