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Finding the Third Proportional to 19,640.75 and 42,393.75

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Solution

The third proportional to 19,640.75 and 42,393.75 is: 91,505.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,640.75 : 42,393.75 = 42,393.75 : x
  2. Step 2: Convert to fraction form
    19,640.75/42,393.75 = 42,393.75/x
  3. Step 3: Cross multiply
    19,640.75x = 42,393.75 × 42,393.75
  4. Step 4: Simplify right side
    19,640.75x = 1,797,230,039.06
  5. Step 5: Solve for x
    x = 1,797,230,039.06/19,640.75
  6. Step 6: Final answer
    x = 91,505.16

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.