Home / 67,288.32-100,932.89-20,541.20

Finding the Fourth Proportional to 67,288.32, 100,932.89 and 20,541.20

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Solution

The fourth proportional to 67,288.32, 100,932.89 and 20,541.20 is: 30,811.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,288.32 : 100,932.89 = 20,541.20 : x
  2. Step 2: Convert to fraction form
    67,288.32/100,932.89 = 20,541.20/x
  3. Step 3: Cross multiply
    67,288.32x = 100,932.89 × 20,541.20
  4. Step 4: Simplify right side
    67,288.32x = 2,073,282,072.70
  5. Step 5: Solve for x
    x = 2,073,282,072.70/67,288.32
  6. Step 6: Final answer
    x = 30,811.92

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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.