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Finding the Fourth Proportional to 82,838.38, 124,257.57 and 20,508.88

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Solution

The fourth proportional to 82,838.38, 124,257.57 and 20,508.88 is: 30,763.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,838.38 : 124,257.57 = 20,508.88 : x
  2. Step 2: Convert to fraction form
    82,838.38/124,257.57 = 20,508.88/x
  3. Step 3: Cross multiply
    82,838.38x = 124,257.57 × 20,508.88
  4. Step 4: Simplify right side
    82,838.38x = 2,548,382,868.39
  5. Step 5: Solve for x
    x = 2,548,382,868.39/82,838.38
  6. Step 6: Final answer
    x = 30,763.31

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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.