Home / 81,295.42-121,956.33-25,122.42

Finding the Fourth Proportional to 81,295.42, 121,956.33 and 25,122.42

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Solution

The fourth proportional to 81,295.42, 121,956.33 and 25,122.42 is: 37,687.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,295.42 : 121,956.33 = 25,122.42 : x
  2. Step 2: Convert to fraction form
    81,295.42/121,956.33 = 25,122.42/x
  3. Step 3: Cross multiply
    81,295.42x = 121,956.33 × 25,122.42
  4. Step 4: Simplify right side
    81,295.42x = 3,063,838,143.92
  5. Step 5: Solve for x
    x = 3,063,838,143.92/81,295.42
  6. Step 6: Final answer
    x = 37,687.71

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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.