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Finding the Fourth Proportional to 54,396, 81,605.70 and 16,955.28

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Solution

The fourth proportional to 54,396, 81,605.70 and 16,955.28 is: 25,436.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,396 : 81,605.70 = 16,955.28 : x
  2. Step 2: Convert to fraction form
    54,396/81,605.70 = 16,955.28/x
  3. Step 3: Cross multiply
    54,396x = 81,605.70 × 16,955.28
  4. Step 4: Simplify right side
    54,396x = 1,383,647,493.10
  5. Step 5: Solve for x
    x = 1,383,647,493.10/54,396
  6. Step 6: Final answer
    x = 25,436.57

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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.