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Finding the Third Proportional to 53,808 and 80,904

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Solution

The third proportional to 53,808 and 80,904 is: 121,644.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,808 : 80,904 = 80,904 : x
  2. Step 2: Convert to fraction form
    53,808/80,904 = 80,904/x
  3. Step 3: Cross multiply
    53,808x = 80,904 × 80,904
  4. Step 4: Simplify right side
    53,808x = 6,545,457,216
  5. Step 5: Solve for x
    x = 6,545,457,216/53,808
  6. Step 6: Final answer
    x = 121,644.69

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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.