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Finding the Third Proportional to 34,318 and 74,072

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Solution

The third proportional to 34,318 and 74,072 is: 159,877.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,318 : 74,072 = 74,072 : x
  2. Step 2: Convert to fraction form
    34,318/74,072 = 74,072/x
  3. Step 3: Cross multiply
    34,318x = 74,072 × 74,072
  4. Step 4: Simplify right side
    34,318x = 5,486,661,184
  5. Step 5: Solve for x
    x = 5,486,661,184/34,318
  6. Step 6: Final answer
    x = 159,877.07

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.