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Finding the Fourth Proportional to 79,181.82, 109,270.95 and 43,372.42

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Solution

The fourth proportional to 79,181.82, 109,270.95 and 43,372.42 is: 59,853.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,181.82 : 109,270.95 = 43,372.42 : x
  2. Step 2: Convert to fraction form
    79,181.82/109,270.95 = 43,372.42/x
  3. Step 3: Cross multiply
    79,181.82x = 109,270.95 × 43,372.42
  4. Step 4: Simplify right side
    79,181.82x = 4,739,345,537.20
  5. Step 5: Solve for x
    x = 4,739,345,537.20/79,181.82
  6. Step 6: Final answer
    x = 59,853.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.