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Finding the Fourth Proportional to 54,608, 81,911.94 and 17,170.78

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Solution

The fourth proportional to 54,608, 81,911.94 and 17,170.78 is: 25,756.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,608 : 81,911.94 = 17,170.78 : x
  2. Step 2: Convert to fraction form
    54,608/81,911.94 = 17,170.78/x
  3. Step 3: Cross multiply
    54,608x = 81,911.94 × 17,170.78
  4. Step 4: Simplify right side
    54,608x = 1,406,491,901.11
  5. Step 5: Solve for x
    x = 1,406,491,901.11/54,608
  6. Step 6: Final answer
    x = 25,756.15

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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.