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Finding the Third Proportional to 18,043 and 39,365

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Solution

The third proportional to 18,043 and 39,365 is: 85,883.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,043 : 39,365 = 39,365 : x
  2. Step 2: Convert to fraction form
    18,043/39,365 = 39,365/x
  3. Step 3: Cross multiply
    18,043x = 39,365 × 39,365
  4. Step 4: Simplify right side
    18,043x = 1,549,603,225
  5. Step 5: Solve for x
    x = 1,549,603,225/18,043
  6. Step 6: Final answer
    x = 85,883.90

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.