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Finding the Third Proportional to 18,841.50 and 51,255

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Solution

The third proportional to 18,841.50 and 51,255 is: 139,430.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,841.50 : 51,255 = 51,255 : x
  2. Step 2: Convert to fraction form
    18,841.50/51,255 = 51,255/x
  3. Step 3: Cross multiply
    18,841.50x = 51,255 × 51,255
  4. Step 4: Simplify right side
    18,841.50x = 2,627,075,025
  5. Step 5: Solve for x
    x = 2,627,075,025/18,841.50
  6. Step 6: Final answer
    x = 139,430.25

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Why These Related Problems?

These problems maintain the same ratio (2.72) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.