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Finding the Fourth Proportional to 72,665.33, 108,996.92 and 20,073.65

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Solution

The fourth proportional to 72,665.33, 108,996.92 and 20,073.65 is: 30,110.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,665.33 : 108,996.92 = 20,073.65 : x
  2. Step 2: Convert to fraction form
    72,665.33/108,996.92 = 20,073.65/x
  3. Step 3: Cross multiply
    72,665.33x = 108,996.92 × 20,073.65
  4. Step 4: Simplify right side
    72,665.33x = 2,187,965,922.79
  5. Step 5: Solve for x
    x = 2,187,965,922.79/72,665.33
  6. Step 6: Final answer
    x = 30,110.18

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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.