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Finding the Fourth Proportional to 84,452.87, 126,679.31 and 68,638.81

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Solution

The fourth proportional to 84,452.87, 126,679.31 and 68,638.81 is: 102,958.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,452.87 : 126,679.31 = 68,638.81 : x
  2. Step 2: Convert to fraction form
    84,452.87/126,679.31 = 68,638.81/x
  3. Step 3: Cross multiply
    84,452.87x = 126,679.31 × 68,638.81
  4. Step 4: Simplify right side
    84,452.87x = 8,695,117,235.12
  5. Step 5: Solve for x
    x = 8,695,117,235.12/84,452.87
  6. Step 6: Final answer
    x = 102,958.22

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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.