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Finding the Fourth Proportional to 68,656.68, 102,879.18 and 33,620.40

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Solution

The fourth proportional to 68,656.68, 102,879.18 and 33,620.40 is: 50,378.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,656.68 : 102,879.18 = 33,620.40 : x
  2. Step 2: Convert to fraction form
    68,656.68/102,879.18 = 33,620.40/x
  3. Step 3: Cross multiply
    68,656.68x = 102,879.18 × 33,620.40
  4. Step 4: Simplify right side
    68,656.68x = 3,458,839,183.27
  5. Step 5: Solve for x
    x = 3,458,839,183.27/68,656.68
  6. Step 6: Final answer
    x = 50,378.77

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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.