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Finding the Third Proportional to 28,455 and 61,272

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Solution

The third proportional to 28,455 and 61,272 is: 131,936.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,455 : 61,272 = 61,272 : x
  2. Step 2: Convert to fraction form
    28,455/61,272 = 61,272/x
  3. Step 3: Cross multiply
    28,455x = 61,272 × 61,272
  4. Step 4: Simplify right side
    28,455x = 3,754,257,984
  5. Step 5: Solve for x
    x = 3,754,257,984/28,455
  6. Step 6: Final answer
    x = 131,936.67

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.