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Finding the Third Proportional to 20,846.25 and 40,639.50

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Solution

The third proportional to 20,846.25 and 40,639.50 is: 79,226.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,846.25 : 40,639.50 = 40,639.50 : x
  2. Step 2: Convert to fraction form
    20,846.25/40,639.50 = 40,639.50/x
  3. Step 3: Cross multiply
    20,846.25x = 40,639.50 × 40,639.50
  4. Step 4: Simplify right side
    20,846.25x = 1,651,568,960.25
  5. Step 5: Solve for x
    x = 1,651,568,960.25/20,846.25
  6. Step 6: Final answer
    x = 79,226.19

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.