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Finding the Fourth Proportional to 100,791.65, 151,151.45 and 33,311.20

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Solution

The fourth proportional to 100,791.65, 151,151.45 and 33,311.20 is: 49,954.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,791.65 : 151,151.45 = 33,311.20 : x
  2. Step 2: Convert to fraction form
    100,791.65/151,151.45 = 33,311.20/x
  3. Step 3: Cross multiply
    100,791.65x = 151,151.45 × 33,311.20
  4. Step 4: Simplify right side
    100,791.65x = 5,035,035,776.16
  5. Step 5: Solve for x
    x = 5,035,035,776.16/100,791.65
  6. Step 6: Final answer
    x = 49,954.89

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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.