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Finding the Third Proportional to 53,608 and 78,853

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Solution

The third proportional to 53,608 and 78,853 is: 115,986.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,608 : 78,853 = 78,853 : x
  2. Step 2: Convert to fraction form
    53,608/78,853 = 78,853/x
  3. Step 3: Cross multiply
    53,608x = 78,853 × 78,853
  4. Step 4: Simplify right side
    53,608x = 6,217,795,609
  5. Step 5: Solve for x
    x = 6,217,795,609/53,608
  6. Step 6: Final answer
    x = 115,986.34

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.