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Finding the Third Proportional to 72,479 and 115,307

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Solution

The third proportional to 72,479 and 115,307 is: 183,442.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,479 : 115,307 = 115,307 : x
  2. Step 2: Convert to fraction form
    72,479/115,307 = 115,307/x
  3. Step 3: Cross multiply
    72,479x = 115,307 × 115,307
  4. Step 4: Simplify right side
    72,479x = 13,295,704,249
  5. Step 5: Solve for x
    x = 13,295,704,249/72,479
  6. Step 6: Final answer
    x = 183,442.16

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.