Home / 54,115.06-81,172.62-35,512.78

Finding the Fourth Proportional to 54,115.06, 81,172.62 and 35,512.78

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Solution

The fourth proportional to 54,115.06, 81,172.62 and 35,512.78 is: 53,269.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,115.06 : 81,172.62 = 35,512.78 : x
  2. Step 2: Convert to fraction form
    54,115.06/81,172.62 = 35,512.78/x
  3. Step 3: Cross multiply
    54,115.06x = 81,172.62 × 35,512.78
  4. Step 4: Simplify right side
    54,115.06x = 2,882,665,396.08
  5. Step 5: Solve for x
    x = 2,882,665,396.08/54,115.06
  6. Step 6: Final answer
    x = 53,269.19

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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.