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Finding the Fourth Proportional to 43,449.78, 65,169.51 and 11,862.42

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Solution

The fourth proportional to 43,449.78, 65,169.51 and 11,862.42 is: 17,792.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,449.78 : 65,169.51 = 11,862.42 : x
  2. Step 2: Convert to fraction form
    43,449.78/65,169.51 = 11,862.42/x
  3. Step 3: Cross multiply
    43,449.78x = 65,169.51 × 11,862.42
  4. Step 4: Simplify right side
    43,449.78x = 773,068,098.81
  5. Step 5: Solve for x
    x = 773,068,098.81/43,449.78
  6. Step 6: Final answer
    x = 17,792.22

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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.