Home / 82,569.28-123,856.26-20,239.72

Finding the Fourth Proportional to 82,569.28, 123,856.26 and 20,239.72

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Solution

The fourth proportional to 82,569.28, 123,856.26 and 20,239.72 is: 30,360.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,569.28 : 123,856.26 = 20,239.72 : x
  2. Step 2: Convert to fraction form
    82,569.28/123,856.26 = 20,239.72/x
  3. Step 3: Cross multiply
    82,569.28x = 123,856.26 × 20,239.72
  4. Step 4: Simplify right side
    82,569.28x = 2,506,816,022.65
  5. Step 5: Solve for x
    x = 2,506,816,022.65/82,569.28
  6. Step 6: Final answer
    x = 30,360.15

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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.