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Finding the Third Proportional to 53,678.25 and 80,880.75

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Solution

The third proportional to 53,678.25 and 80,880.75 is: 121,868.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,678.25 : 80,880.75 = 80,880.75 : x
  2. Step 2: Convert to fraction form
    53,678.25/80,880.75 = 80,880.75/x
  3. Step 3: Cross multiply
    53,678.25x = 80,880.75 × 80,880.75
  4. Step 4: Simplify right side
    53,678.25x = 6,541,695,720.56
  5. Step 5: Solve for x
    x = 6,541,695,720.56/53,678.25
  6. Step 6: Final answer
    x = 121,868.65

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.