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Finding the Fourth Proportional to 68,166.40, 102,249.60 and 26,613.40

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Solution

The fourth proportional to 68,166.40, 102,249.60 and 26,613.40 is: 39,920.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,166.40 : 102,249.60 = 26,613.40 : x
  2. Step 2: Convert to fraction form
    68,166.40/102,249.60 = 26,613.40/x
  3. Step 3: Cross multiply
    68,166.40x = 102,249.60 × 26,613.40
  4. Step 4: Simplify right side
    68,166.40x = 2,721,209,504.64
  5. Step 5: Solve for x
    x = 2,721,209,504.64/68,166.40
  6. Step 6: Final answer
    x = 39,920.10

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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.