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Finding the Third Proportional to 18,218 and 39,532

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Solution

The third proportional to 18,218 and 39,532 is: 85,782.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,218 : 39,532 = 39,532 : x
  2. Step 2: Convert to fraction form
    18,218/39,532 = 39,532/x
  3. Step 3: Cross multiply
    18,218x = 39,532 × 39,532
  4. Step 4: Simplify right side
    18,218x = 1,562,779,024
  5. Step 5: Solve for x
    x = 1,562,779,024/18,218
  6. Step 6: Final answer
    x = 85,782.14

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.