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Finding the Fourth Proportional to 68,997.69, 103,422.15 and 33,383.79

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Solution

The fourth proportional to 68,997.69, 103,422.15 and 33,383.79 is: 50,039.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,997.69 : 103,422.15 = 33,383.79 : x
  2. Step 2: Convert to fraction form
    68,997.69/103,422.15 = 33,383.79/x
  3. Step 3: Cross multiply
    68,997.69x = 103,422.15 × 33,383.79
  4. Step 4: Simplify right side
    68,997.69x = 3,452,623,336.95
  5. Step 5: Solve for x
    x = 3,452,623,336.95/68,997.69
  6. Step 6: Final answer
    x = 50,039.69

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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.