Home / 80,883.92-121,243.76-30,951.20

Finding the Fourth Proportional to 80,883.92, 121,243.76 and 30,951.20

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Solution

The fourth proportional to 80,883.92, 121,243.76 and 30,951.20 is: 46,395.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,883.92 : 121,243.76 = 30,951.20 : x
  2. Step 2: Convert to fraction form
    80,883.92/121,243.76 = 30,951.20/x
  3. Step 3: Cross multiply
    80,883.92x = 121,243.76 × 30,951.20
  4. Step 4: Simplify right side
    80,883.92x = 3,752,639,864.51
  5. Step 5: Solve for x
    x = 3,752,639,864.51/80,883.92
  6. Step 6: Final answer
    x = 46,395.38

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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.