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Finding the Third Proportional to 31,226 and 47,621

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Solution

The third proportional to 31,226 and 47,621 is: 72,624.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,226 : 47,621 = 47,621 : x
  2. Step 2: Convert to fraction form
    31,226/47,621 = 47,621/x
  3. Step 3: Cross multiply
    31,226x = 47,621 × 47,621
  4. Step 4: Simplify right side
    31,226x = 2,267,759,641
  5. Step 5: Solve for x
    x = 2,267,759,641/31,226
  6. Step 6: Final answer
    x = 72,624.08

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.