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Finding the Fourth Proportional to 55,141.44, 82,729.44 and 20,074.56

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Solution

The fourth proportional to 55,141.44, 82,729.44 and 20,074.56 is: 30,118.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,141.44 : 82,729.44 = 20,074.56 : x
  2. Step 2: Convert to fraction form
    55,141.44/82,729.44 = 20,074.56/x
  3. Step 3: Cross multiply
    55,141.44x = 82,729.44 × 20,074.56
  4. Step 4: Simplify right side
    55,141.44x = 1,660,757,107.05
  5. Step 5: Solve for x
    x = 1,660,757,107.05/55,141.44
  6. Step 6: Final answer
    x = 30,118.13

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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.