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Finding the Third Proportional to 53,776 and 83,609

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Solution

The third proportional to 53,776 and 83,609 is: 129,992.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,776 : 83,609 = 83,609 : x
  2. Step 2: Convert to fraction form
    53,776/83,609 = 83,609/x
  3. Step 3: Cross multiply
    53,776x = 83,609 × 83,609
  4. Step 4: Simplify right side
    53,776x = 6,990,464,881
  5. Step 5: Solve for x
    x = 6,990,464,881/53,776
  6. Step 6: Final answer
    x = 129,992.28

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.