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Finding the Third Proportional to 38,972 and 84,776

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Solution

The third proportional to 38,972 and 84,776 is: 184,413.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,972 : 84,776 = 84,776 : x
  2. Step 2: Convert to fraction form
    38,972/84,776 = 84,776/x
  3. Step 3: Cross multiply
    38,972x = 84,776 × 84,776
  4. Step 4: Simplify right side
    38,972x = 7,186,970,176
  5. Step 5: Solve for x
    x = 7,186,970,176/38,972
  6. Step 6: Final answer
    x = 184,413.69

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.