Home / 80,867.74-121,295.85-30,257.14

Finding the Fourth Proportional to 80,867.74, 121,295.85 and 30,257.14

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Solution

The fourth proportional to 80,867.74, 121,295.85 and 30,257.14 is: 45,383.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,867.74 : 121,295.85 = 30,257.14 : x
  2. Step 2: Convert to fraction form
    80,867.74/121,295.85 = 30,257.14/x
  3. Step 3: Cross multiply
    80,867.74x = 121,295.85 × 30,257.14
  4. Step 4: Simplify right side
    80,867.74x = 3,670,065,514.87
  5. Step 5: Solve for x
    x = 3,670,065,514.87/80,867.74
  6. Step 6: Final answer
    x = 45,383.55

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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.