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Finding the Third Proportional to 8,722.50 and 20,570.25

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Solution

The third proportional to 8,722.50 and 20,570.25 is: 48,510.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.50 : 20,570.25 = 20,570.25 : x
  2. Step 2: Convert to fraction form
    8,722.50/20,570.25 = 20,570.25/x
  3. Step 3: Cross multiply
    8,722.50x = 20,570.25 × 20,570.25
  4. Step 4: Simplify right side
    8,722.50x = 423,135,185.06
  5. Step 5: Solve for x
    x = 423,135,185.06/8,722.50
  6. Step 6: Final answer
    x = 48,510.77

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.