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Finding the Fourth Proportional to 101,774.88, 140,446 and 61,481.61

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Solution

The fourth proportional to 101,774.88, 140,446 and 61,481.61 is: 84,842.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,774.88 : 140,446 = 61,481.61 : x
  2. Step 2: Convert to fraction form
    101,774.88/140,446 = 61,481.61/x
  3. Step 3: Cross multiply
    101,774.88x = 140,446 × 61,481.61
  4. Step 4: Simplify right side
    101,774.88x = 8,634,846,198.06
  5. Step 5: Solve for x
    x = 8,634,846,198.06/101,774.88
  6. Step 6: Final answer
    x = 84,842.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.