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Finding the Fourth Proportional to 68,843.67, 103,245.65 and 18,925.40

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Solution

The fourth proportional to 68,843.67, 103,245.65 and 18,925.40 is: 28,382.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,843.67 : 103,245.65 = 18,925.40 : x
  2. Step 2: Convert to fraction form
    68,843.67/103,245.65 = 18,925.40/x
  3. Step 3: Cross multiply
    68,843.67x = 103,245.65 × 18,925.40
  4. Step 4: Simplify right side
    68,843.67x = 1,953,964,613.65
  5. Step 5: Solve for x
    x = 1,953,964,613.65/68,843.67
  6. Step 6: Final answer
    x = 28,382.63

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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.