Home / 80,841.90-121,258.76-30,918.17

Finding the Fourth Proportional to 80,841.90, 121,258.76 and 30,918.17

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Solution

The fourth proportional to 80,841.90, 121,258.76 and 30,918.17 is: 46,375.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,841.90 : 121,258.76 = 30,918.17 : x
  2. Step 2: Convert to fraction form
    80,841.90/121,258.76 = 30,918.17/x
  3. Step 3: Cross multiply
    80,841.90x = 121,258.76 × 30,918.17
  4. Step 4: Simplify right side
    80,841.90x = 3,749,098,194.78
  5. Step 5: Solve for x
    x = 3,749,098,194.78/80,841.90
  6. Step 6: Final answer
    x = 46,375.68

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1.5x scale

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.