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Finding the Fourth Proportional to 54,354.78, 81,544.77 and 16,912.89

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Solution

The fourth proportional to 54,354.78, 81,544.77 and 16,912.89 is: 25,373.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,354.78 : 81,544.77 = 16,912.89 : x
  2. Step 2: Convert to fraction form
    54,354.78/81,544.77 = 16,912.89/x
  3. Step 3: Cross multiply
    54,354.78x = 81,544.77 × 16,912.89
  4. Step 4: Simplify right side
    54,354.78x = 1,379,157,725.09
  5. Step 5: Solve for x
    x = 1,379,157,725.09/54,354.78
  6. Step 6: Final answer
    x = 25,373.26

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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.