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Finding the Third Proportional to 53,318 and 80,388

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Solution

The third proportional to 53,318 and 80,388 is: 121,201.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,318 : 80,388 = 80,388 : x
  2. Step 2: Convert to fraction form
    53,318/80,388 = 80,388/x
  3. Step 3: Cross multiply
    53,318x = 80,388 × 80,388
  4. Step 4: Simplify right side
    53,318x = 6,462,230,544
  5. Step 5: Solve for x
    x = 6,462,230,544/53,318
  6. Step 6: Final answer
    x = 121,201.67

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.