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Finding the Fourth Proportional to 84,593.89, 126,890.93 and 25,429.56

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Solution

The fourth proportional to 84,593.89, 126,890.93 and 25,429.56 is: 38,144.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,593.89 : 126,890.93 = 25,429.56 : x
  2. Step 2: Convert to fraction form
    84,593.89/126,890.93 = 25,429.56/x
  3. Step 3: Cross multiply
    84,593.89x = 126,890.93 × 25,429.56
  4. Step 4: Simplify right side
    84,593.89x = 3,226,780,517.89
  5. Step 5: Solve for x
    x = 3,226,780,517.89/84,593.89
  6. Step 6: Final answer
    x = 38,144.37

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1.5x scale

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.