Home / 80,862.24-121,292.55-57,636.30

Finding the Fourth Proportional to 80,862.24, 121,292.55 and 57,636.30

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Solution

The fourth proportional to 80,862.24, 121,292.55 and 57,636.30 is: 86,453.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,862.24 : 121,292.55 = 57,636.30 : x
  2. Step 2: Convert to fraction form
    80,862.24/121,292.55 = 57,636.30/x
  3. Step 3: Cross multiply
    80,862.24x = 121,292.55 × 57,636.30
  4. Step 4: Simplify right side
    80,862.24x = 6,990,853,799.57
  5. Step 5: Solve for x
    x = 6,990,853,799.57/80,862.24
  6. Step 6: Final answer
    x = 86,453.87

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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.