Home / 81,043.20-111,836.70-50,844.78

Finding the Fourth Proportional to 81,043.20, 111,836.70 and 50,844.78

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Solution

The fourth proportional to 81,043.20, 111,836.70 and 50,844.78 is: 70,163.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,043.20 : 111,836.70 = 50,844.78 : x
  2. Step 2: Convert to fraction form
    81,043.20/111,836.70 = 50,844.78/x
  3. Step 3: Cross multiply
    81,043.20x = 111,836.70 × 50,844.78
  4. Step 4: Simplify right side
    81,043.20x = 5,686,312,407.43
  5. Step 5: Solve for x
    x = 5,686,312,407.43/81,043.20
  6. Step 6: Final answer
    x = 70,163.97

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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.