Home / 80,951.20-111,713.07-45,142.72

Finding the Fourth Proportional to 80,951.20, 111,713.07 and 45,142.72

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Solution

The fourth proportional to 80,951.20, 111,713.07 and 45,142.72 is: 62,297.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,951.20 : 111,713.07 = 45,142.72 : x
  2. Step 2: Convert to fraction form
    80,951.20/111,713.07 = 45,142.72/x
  3. Step 3: Cross multiply
    80,951.20x = 111,713.07 × 45,142.72
  4. Step 4: Simplify right side
    80,951.20x = 5,043,031,729.35
  5. Step 5: Solve for x
    x = 5,043,031,729.35/80,951.20
  6. Step 6: Final answer
    x = 62,297.19

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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.