Home / 81,032.20-111,821.52-50,833.78

Finding the Fourth Proportional to 81,032.20, 111,821.52 and 50,833.78

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Solution

The fourth proportional to 81,032.20, 111,821.52 and 50,833.78 is: 70,148.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,032.20 : 111,821.52 = 50,833.78 : x
  2. Step 2: Convert to fraction form
    81,032.20/111,821.52 = 50,833.78/x
  3. Step 3: Cross multiply
    81,032.20x = 111,821.52 × 50,833.78
  4. Step 4: Simplify right side
    81,032.20x = 5,684,310,546.95
  5. Step 5: Solve for x
    x = 5,684,310,546.95/81,032.20
  6. Step 6: Final answer
    x = 70,148.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.