Home / 81,521.32-122,299.62-25,360.42

Finding the Fourth Proportional to 81,521.32, 122,299.62 and 25,360.42

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Solution

The fourth proportional to 81,521.32, 122,299.62 and 25,360.42 is: 38,046.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,521.32 : 122,299.62 = 25,360.42 : x
  2. Step 2: Convert to fraction form
    81,521.32/122,299.62 = 25,360.42/x
  3. Step 3: Cross multiply
    81,521.32x = 122,299.62 × 25,360.42
  4. Step 4: Simplify right side
    81,521.32x = 3,101,569,729.04
  5. Step 5: Solve for x
    x = 3,101,569,729.04/81,521.32
  6. Step 6: Final answer
    x = 38,046.12

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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.