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Finding the Third Proportional to 53,292 and 80,916

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Solution

The third proportional to 53,292 and 80,916 is: 122,858.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,292 : 80,916 = 80,916 : x
  2. Step 2: Convert to fraction form
    53,292/80,916 = 80,916/x
  3. Step 3: Cross multiply
    53,292x = 80,916 × 80,916
  4. Step 4: Simplify right side
    53,292x = 6,547,399,056
  5. Step 5: Solve for x
    x = 6,547,399,056/53,292
  6. Step 6: Final answer
    x = 122,858.95

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.