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Finding the Fourth Proportional to 68,843.66, 103,266.62 and 18,923.45

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Solution

The fourth proportional to 68,843.66, 103,266.62 and 18,923.45 is: 28,385.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,843.66 : 103,266.62 = 18,923.45 : x
  2. Step 2: Convert to fraction form
    68,843.66/103,266.62 = 18,923.45/x
  3. Step 3: Cross multiply
    68,843.66x = 103,266.62 × 18,923.45
  4. Step 4: Simplify right side
    68,843.66x = 1,954,160,251.21
  5. Step 5: Solve for x
    x = 1,954,160,251.21/68,843.66
  6. Step 6: Final answer
    x = 28,385.48

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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.