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Finding the Third Proportional to 51,718.50 and 77,891.63

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Solution

The third proportional to 51,718.50 and 77,891.63 is: 117,310.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,718.50 : 77,891.63 = 77,891.63 : x
  2. Step 2: Convert to fraction form
    51,718.50/77,891.63 = 77,891.63/x
  3. Step 3: Cross multiply
    51,718.50x = 77,891.63 × 77,891.63
  4. Step 4: Simplify right side
    51,718.50x = 6,067,105,245.14
  5. Step 5: Solve for x
    x = 6,067,105,245.14/51,718.50
  6. Step 6: Final answer
    x = 117,310.15

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.