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Finding the Fourth Proportional to 111,990.70, 167,986.05 and 33,105.70

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Solution

The fourth proportional to 111,990.70, 167,986.05 and 33,105.70 is: 49,658.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,990.70 : 167,986.05 = 33,105.70 : x
  2. Step 2: Convert to fraction form
    111,990.70/167,986.05 = 33,105.70/x
  3. Step 3: Cross multiply
    111,990.70x = 167,986.05 × 33,105.70
  4. Step 4: Simplify right side
    111,990.70x = 5,561,295,775.49
  5. Step 5: Solve for x
    x = 5,561,295,775.49/111,990.70
  6. Step 6: Final answer
    x = 49,658.55

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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.