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Finding the Fourth Proportional to 68,894.35, 103,321 and 26,780.97

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Solution

The fourth proportional to 68,894.35, 103,321 and 26,780.97 is: 40,163.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,894.35 : 103,321 = 26,780.97 : x
  2. Step 2: Convert to fraction form
    68,894.35/103,321 = 26,780.97/x
  3. Step 3: Cross multiply
    68,894.35x = 103,321 × 26,780.97
  4. Step 4: Simplify right side
    68,894.35x = 2,767,036,601.37
  5. Step 5: Solve for x
    x = 2,767,036,601.37/68,894.35
  6. Step 6: Final answer
    x = 40,163.48

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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.