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Finding the Fourth Proportional to 57,087.89, 85,640.04 and 17,648.08

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Solution

The fourth proportional to 57,087.89, 85,640.04 and 17,648.08 is: 26,474.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,087.89 : 85,640.04 = 17,648.08 : x
  2. Step 2: Convert to fraction form
    57,087.89/85,640.04 = 17,648.08/x
  3. Step 3: Cross multiply
    57,087.89x = 85,640.04 × 17,648.08
  4. Step 4: Simplify right side
    57,087.89x = 1,511,382,233.00
  5. Step 5: Solve for x
    x = 1,511,382,233.00/57,087.89
  6. Step 6: Final answer
    x = 26,474.65

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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.