Home / 80,882.11-121,323.94-21,717.78

Finding the Fourth Proportional to 80,882.11, 121,323.94 and 21,717.78

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Solution

The fourth proportional to 80,882.11, 121,323.94 and 21,717.78 is: 32,576.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,882.11 : 121,323.94 = 21,717.78 : x
  2. Step 2: Convert to fraction form
    80,882.11/121,323.94 = 21,717.78/x
  3. Step 3: Cross multiply
    80,882.11x = 121,323.94 × 21,717.78
  4. Step 4: Simplify right side
    80,882.11x = 2,634,886,583.36
  5. Step 5: Solve for x
    x = 2,634,886,583.36/80,882.11
  6. Step 6: Final answer
    x = 32,576.88

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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.