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Finding the Fourth Proportional to 75,436.80, 104,119.92 and 49,944.12

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Solution

The fourth proportional to 75,436.80, 104,119.92 and 49,944.12 is: 68,934.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,436.80 : 104,119.92 = 49,944.12 : x
  2. Step 2: Convert to fraction form
    75,436.80/104,119.92 = 49,944.12/x
  3. Step 3: Cross multiply
    75,436.80x = 104,119.92 × 49,944.12
  4. Step 4: Simplify right side
    75,436.80x = 5,200,177,778.87
  5. Step 5: Solve for x
    x = 5,200,177,778.87/75,436.80
  6. Step 6: Final answer
    x = 68,934.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.