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Finding the Fourth Proportional to 54,618.88, 81,928.78 and 17,178.08

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Solution

The fourth proportional to 54,618.88, 81,928.78 and 17,178.08 is: 25,767.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,618.88 : 81,928.78 = 17,178.08 : x
  2. Step 2: Convert to fraction form
    54,618.88/81,928.78 = 17,178.08/x
  3. Step 3: Cross multiply
    54,618.88x = 81,928.78 × 17,178.08
  4. Step 4: Simplify right side
    54,618.88x = 1,407,379,137.14
  5. Step 5: Solve for x
    x = 1,407,379,137.14/54,618.88
  6. Step 6: Final answer
    x = 25,767.26

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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.