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Finding the Fourth Proportional to 69,902.65, 104,780.13 and 50,170.51

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Solution

The fourth proportional to 69,902.65, 104,780.13 and 50,170.51 is: 75,202.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,902.65 : 104,780.13 = 50,170.51 : x
  2. Step 2: Convert to fraction form
    69,902.65/104,780.13 = 50,170.51/x
  3. Step 3: Cross multiply
    69,902.65x = 104,780.13 × 50,170.51
  4. Step 4: Simplify right side
    69,902.65x = 5,256,872,559.97
  5. Step 5: Solve for x
    x = 5,256,872,559.97/69,902.65
  6. Step 6: Final answer
    x = 75,202.76

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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.