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Finding the Third Proportional to 51,817.50 and 77,918.50

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Solution

The third proportional to 51,817.50 and 77,918.50 is: 117,166.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,817.50 : 77,918.50 = 77,918.50 : x
  2. Step 2: Convert to fraction form
    51,817.50/77,918.50 = 77,918.50/x
  3. Step 3: Cross multiply
    51,817.50x = 77,918.50 × 77,918.50
  4. Step 4: Simplify right side
    51,817.50x = 6,071,292,642.25
  5. Step 5: Solve for x
    x = 6,071,292,642.25/51,817.50
  6. Step 6: Final answer
    x = 117,166.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.