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Finding the Third Proportional to 48,211 and 74,639

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Solution

The third proportional to 48,211 and 74,639 is: 115,554.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,211 : 74,639 = 74,639 : x
  2. Step 2: Convert to fraction form
    48,211/74,639 = 74,639/x
  3. Step 3: Cross multiply
    48,211x = 74,639 × 74,639
  4. Step 4: Simplify right side
    48,211x = 5,570,980,321
  5. Step 5: Solve for x
    x = 5,570,980,321/48,211
  6. Step 6: Final answer
    x = 115,554.13

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.