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Finding the Fourth Proportional to 43,489.92, 65,252.16 and 15,790.08

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Solution

The fourth proportional to 43,489.92, 65,252.16 and 15,790.08 is: 23,691.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,489.92 : 65,252.16 = 15,790.08 : x
  2. Step 2: Convert to fraction form
    43,489.92/65,252.16 = 15,790.08/x
  3. Step 3: Cross multiply
    43,489.92x = 65,252.16 × 15,790.08
  4. Step 4: Simplify right side
    43,489.92x = 1,030,336,826.57
  5. Step 5: Solve for x
    x = 1,030,336,826.57/43,489.92
  6. Step 6: Final answer
    x = 23,691.39

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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.