Home / 50,105.44-75,119.28-20,530.72

Finding the Fourth Proportional to 50,105.44, 75,119.28 and 20,530.72

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Solution

The fourth proportional to 50,105.44, 75,119.28 and 20,530.72 is: 30,780.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,105.44 : 75,119.28 = 20,530.72 : x
  2. Step 2: Convert to fraction form
    50,105.44/75,119.28 = 20,530.72/x
  3. Step 3: Cross multiply
    50,105.44x = 75,119.28 × 20,530.72
  4. Step 4: Simplify right side
    50,105.44x = 1,542,252,904.28
  5. Step 5: Solve for x
    x = 1,542,252,904.28/50,105.44
  6. Step 6: Final answer
    x = 30,780.15

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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.