Home / 80,850.41-121,275.62-30,945.81

Finding the Fourth Proportional to 80,850.41, 121,275.62 and 30,945.81

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Solution

The fourth proportional to 80,850.41, 121,275.62 and 30,945.81 is: 46,418.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,850.41 : 121,275.62 = 30,945.81 : x
  2. Step 2: Convert to fraction form
    80,850.41/121,275.62 = 30,945.81/x
  3. Step 3: Cross multiply
    80,850.41x = 121,275.62 × 30,945.81
  4. Step 4: Simplify right side
    80,850.41x = 3,752,972,139.42
  5. Step 5: Solve for x
    x = 3,752,972,139.42/80,850.41
  6. Step 6: Final answer
    x = 46,418.72

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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.