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Finding the Third Proportional to 51,001 and 78,776

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Solution

The third proportional to 51,001 and 78,776 is: 121,677.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,001 : 78,776 = 78,776 : x
  2. Step 2: Convert to fraction form
    51,001/78,776 = 78,776/x
  3. Step 3: Cross multiply
    51,001x = 78,776 × 78,776
  4. Step 4: Simplify right side
    51,001x = 6,205,658,176
  5. Step 5: Solve for x
    x = 6,205,658,176/51,001
  6. Step 6: Final answer
    x = 121,677.19

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.