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Finding the Fourth Proportional to 33,689.80, 50,479.08 and 20,502.28

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Solution

The fourth proportional to 33,689.80, 50,479.08 and 20,502.28 is: 30,719.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,689.80 : 50,479.08 = 20,502.28 : x
  2. Step 2: Convert to fraction form
    33,689.80/50,479.08 = 20,502.28/x
  3. Step 3: Cross multiply
    33,689.80x = 50,479.08 × 20,502.28
  4. Step 4: Simplify right side
    33,689.80x = 1,034,936,232.30
  5. Step 5: Solve for x
    x = 1,034,936,232.30/33,689.80
  6. Step 6: Final answer
    x = 30,719.57

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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.