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Finding the Fourth Proportional to 84,608.62, 126,895.11 and 25,426.78

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Solution

The fourth proportional to 84,608.62, 126,895.11 and 25,426.78 is: 38,134.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,608.62 : 126,895.11 = 25,426.78 : x
  2. Step 2: Convert to fraction form
    84,608.62/126,895.11 = 25,426.78/x
  3. Step 3: Cross multiply
    84,608.62x = 126,895.11 × 25,426.78
  4. Step 4: Simplify right side
    84,608.62x = 3,226,534,045.05
  5. Step 5: Solve for x
    x = 3,226,534,045.05/84,608.62
  6. Step 6: Final answer
    x = 38,134.81

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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.