Home / 81,512.42-122,286.22-25,351.42

Finding the Fourth Proportional to 81,512.42, 122,286.22 and 25,351.42

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Solution

The fourth proportional to 81,512.42, 122,286.22 and 25,351.42 is: 38,032.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,512.42 : 122,286.22 = 25,351.42 : x
  2. Step 2: Convert to fraction form
    81,512.42/122,286.22 = 25,351.42/x
  3. Step 3: Cross multiply
    81,512.42x = 122,286.22 × 25,351.42
  4. Step 4: Simplify right side
    81,512.42x = 3,100,129,323.43
  5. Step 5: Solve for x
    x = 3,100,129,323.43/81,512.42
  6. Step 6: Final answer
    x = 38,032.60

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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.