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Finding the Third Proportional to 18,620 and 40,528

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Solution

The third proportional to 18,620 and 40,528 is: 88,212.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,620 : 40,528 = 40,528 : x
  2. Step 2: Convert to fraction form
    18,620/40,528 = 40,528/x
  3. Step 3: Cross multiply
    18,620x = 40,528 × 40,528
  4. Step 4: Simplify right side
    18,620x = 1,642,518,784
  5. Step 5: Solve for x
    x = 1,642,518,784/18,620
  6. Step 6: Final answer
    x = 88,212.61

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.