Home / 80,919.15-111,668.52-45,108.39

Finding the Fourth Proportional to 80,919.15, 111,668.52 and 45,108.39

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Solution

The fourth proportional to 80,919.15, 111,668.52 and 45,108.39 is: 62,249.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,919.15 : 111,668.52 = 45,108.39 : x
  2. Step 2: Convert to fraction form
    80,919.15/111,668.52 = 45,108.39/x
  3. Step 3: Cross multiply
    80,919.15x = 111,668.52 × 45,108.39
  4. Step 4: Simplify right side
    80,919.15x = 5,037,187,738.80
  5. Step 5: Solve for x
    x = 5,037,187,738.80/80,919.15
  6. Step 6: Final answer
    x = 62,249.64

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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.