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Finding the Third Proportional to 62,940 and 128,796

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Solution

The third proportional to 62,940 and 128,796 is: 263,559.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,940 : 128,796 = 128,796 : x
  2. Step 2: Convert to fraction form
    62,940/128,796 = 128,796/x
  3. Step 3: Cross multiply
    62,940x = 128,796 × 128,796
  4. Step 4: Simplify right side
    62,940x = 16,588,409,616
  5. Step 5: Solve for x
    x = 16,588,409,616/62,940
  6. Step 6: Final answer
    x = 263,559.10

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.