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Finding the Third Proportional to 73,020 and 80,700

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Solution

The third proportional to 73,020 and 80,700 is: 89,187.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,020 : 80,700 = 80,700 : x
  2. Step 2: Convert to fraction form
    73,020/80,700 = 80,700/x
  3. Step 3: Cross multiply
    73,020x = 80,700 × 80,700
  4. Step 4: Simplify right side
    73,020x = 6,512,490,000
  5. Step 5: Solve for x
    x = 6,512,490,000/73,020
  6. Step 6: Final answer
    x = 89,187.76

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Why These Related Problems?

These problems maintain the same ratio (1.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.