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Finding the Fourth Proportional to 68,676.90, 102,820.77 and 43,654.74

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Solution

The fourth proportional to 68,676.90, 102,820.77 and 43,654.74 is: 65,358.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,676.90 : 102,820.77 = 43,654.74 : x
  2. Step 2: Convert to fraction form
    68,676.90/102,820.77 = 43,654.74/x
  3. Step 3: Cross multiply
    68,676.90x = 102,820.77 × 43,654.74
  4. Step 4: Simplify right side
    68,676.90x = 4,488,613,980.95
  5. Step 5: Solve for x
    x = 4,488,613,980.95/68,676.90
  6. Step 6: Final answer
    x = 65,358.42

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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.