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Finding the Fourth Proportional to 43,668.43, 65,447.82 and 18,679.09

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Solution

The fourth proportional to 43,668.43, 65,447.82 and 18,679.09 is: 27,995.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,668.43 : 65,447.82 = 18,679.09 : x
  2. Step 2: Convert to fraction form
    43,668.43/65,447.82 = 18,679.09/x
  3. Step 3: Cross multiply
    43,668.43x = 65,447.82 × 18,679.09
  4. Step 4: Simplify right side
    43,668.43x = 1,222,505,720.08
  5. Step 5: Solve for x
    x = 1,222,505,720.08/43,668.43
  6. Step 6: Final answer
    x = 27,995.18

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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.