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Finding the Third Proportional to 19,640.50 and 40,433

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Solution

The third proportional to 19,640.50 and 40,433 is: 83,237.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,640.50 : 40,433 = 40,433 : x
  2. Step 2: Convert to fraction form
    19,640.50/40,433 = 40,433/x
  3. Step 3: Cross multiply
    19,640.50x = 40,433 × 40,433
  4. Step 4: Simplify right side
    19,640.50x = 1,634,827,489
  5. Step 5: Solve for x
    x = 1,634,827,489/19,640.50
  6. Step 6: Final answer
    x = 83,237.57

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.