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Finding the Fourth Proportional to 123,879.25, 185,846.57 and 39,644.47

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Solution

The fourth proportional to 123,879.25, 185,846.57 and 39,644.47 is: 59,475.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,879.25 : 185,846.57 = 39,644.47 : x
  2. Step 2: Convert to fraction form
    123,879.25/185,846.57 = 39,644.47/x
  3. Step 3: Cross multiply
    123,879.25x = 185,846.57 × 39,644.47
  4. Step 4: Simplify right side
    123,879.25x = 7,367,788,768.97
  5. Step 5: Solve for x
    x = 7,367,788,768.97/123,879.25
  6. Step 6: Final answer
    x = 59,475.57

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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.