Home / 81,042.70-111,890.26-55,591.68

Finding the Fourth Proportional to 81,042.70, 111,890.26 and 55,591.68

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Solution

The fourth proportional to 81,042.70, 111,890.26 and 55,591.68 is: 76,751.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,042.70 : 111,890.26 = 55,591.68 : x
  2. Step 2: Convert to fraction form
    81,042.70/111,890.26 = 55,591.68/x
  3. Step 3: Cross multiply
    81,042.70x = 111,890.26 × 55,591.68
  4. Step 4: Simplify right side
    81,042.70x = 6,220,167,529.04
  5. Step 5: Solve for x
    x = 6,220,167,529.04/81,042.70
  6. Step 6: Final answer
    x = 76,751.73

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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.