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Finding the Third Proportional to 19,467 and 39,865.50

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Solution

The third proportional to 19,467 and 39,865.50 is: 81,638.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,467 : 39,865.50 = 39,865.50 : x
  2. Step 2: Convert to fraction form
    19,467/39,865.50 = 39,865.50/x
  3. Step 3: Cross multiply
    19,467x = 39,865.50 × 39,865.50
  4. Step 4: Simplify right side
    19,467x = 1,589,258,090.25
  5. Step 5: Solve for x
    x = 1,589,258,090.25/19,467
  6. Step 6: Final answer
    x = 81,638.57

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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.