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Finding the Third Proportional to 35,172 and 74,920

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Solution

The third proportional to 35,172 and 74,920 is: 159,587.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,172 : 74,920 = 74,920 : x
  2. Step 2: Convert to fraction form
    35,172/74,920 = 74,920/x
  3. Step 3: Cross multiply
    35,172x = 74,920 × 74,920
  4. Step 4: Simplify right side
    35,172x = 5,613,006,400
  5. Step 5: Solve for x
    x = 5,613,006,400/35,172
  6. Step 6: Final answer
    x = 159,587.35

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.