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Finding the Fourth Proportional to 43,659.92, 65,435.07 and 18,670.57

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Solution

The fourth proportional to 43,659.92, 65,435.07 and 18,670.57 is: 27,982.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,659.92 : 65,435.07 = 18,670.57 : x
  2. Step 2: Convert to fraction form
    43,659.92/65,435.07 = 18,670.57/x
  3. Step 3: Cross multiply
    43,659.92x = 65,435.07 × 18,670.57
  4. Step 4: Simplify right side
    43,659.92x = 1,221,709,891.30
  5. Step 5: Solve for x
    x = 1,221,709,891.30/43,659.92
  6. Step 6: Final answer
    x = 27,982.42

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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.