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Finding the Fourth Proportional to 71,933.38, 107,900.07 and 30,380.74

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Solution

The fourth proportional to 71,933.38, 107,900.07 and 30,380.74 is: 45,571.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,933.38 : 107,900.07 = 30,380.74 : x
  2. Step 2: Convert to fraction form
    71,933.38/107,900.07 = 30,380.74/x
  3. Step 3: Cross multiply
    71,933.38x = 107,900.07 × 30,380.74
  4. Step 4: Simplify right side
    71,933.38x = 3,278,083,972.65
  5. Step 5: Solve for x
    x = 3,278,083,972.65/71,933.38
  6. Step 6: Final answer
    x = 45,571.11

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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.