Home / 80,986.13-121,514.28-43,502.47

Finding the Fourth Proportional to 80,986.13, 121,514.28 and 43,502.47

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Solution

The fourth proportional to 80,986.13, 121,514.28 and 43,502.47 is: 65,272.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,986.13 : 121,514.28 = 43,502.47 : x
  2. Step 2: Convert to fraction form
    80,986.13/121,514.28 = 43,502.47/x
  3. Step 3: Cross multiply
    80,986.13x = 121,514.28 × 43,502.47
  4. Step 4: Simplify right side
    80,986.13x = 5,286,170,907.73
  5. Step 5: Solve for x
    x = 5,286,170,907.73/80,986.13
  6. Step 6: Final answer
    x = 65,272.55

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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.