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Finding the Third Proportional to 53,772 and 85,122

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Solution

The third proportional to 53,772 and 85,122 is: 134,749.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,772 : 85,122 = 85,122 : x
  2. Step 2: Convert to fraction form
    53,772/85,122 = 85,122/x
  3. Step 3: Cross multiply
    53,772x = 85,122 × 85,122
  4. Step 4: Simplify right side
    53,772x = 7,245,754,884
  5. Step 5: Solve for x
    x = 7,245,754,884/53,772
  6. Step 6: Final answer
    x = 134,749.59

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.