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Finding the Third Proportional to 14,550 and 31,620

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Solution

The third proportional to 14,550 and 31,620 is: 68,716.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,550 : 31,620 = 31,620 : x
  2. Step 2: Convert to fraction form
    14,550/31,620 = 31,620/x
  3. Step 3: Cross multiply
    14,550x = 31,620 × 31,620
  4. Step 4: Simplify right side
    14,550x = 999,824,400
  5. Step 5: Solve for x
    x = 999,824,400/14,550
  6. Step 6: Final answer
    x = 68,716.45

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.