Home / 81,067.13-111,874.53-50,853.72

Finding the Fourth Proportional to 81,067.13, 111,874.53 and 50,853.72

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Solution

The fourth proportional to 81,067.13, 111,874.53 and 50,853.72 is: 70,179.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,067.13 : 111,874.53 = 50,853.72 : x
  2. Step 2: Convert to fraction form
    81,067.13/111,874.53 = 50,853.72/x
  3. Step 3: Cross multiply
    81,067.13x = 111,874.53 × 50,853.72
  4. Step 4: Simplify right side
    81,067.13x = 5,689,236,023.75
  5. Step 5: Solve for x
    x = 5,689,236,023.75/81,067.13
  6. Step 6: Final answer
    x = 70,179.32

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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.