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Finding the Third Proportional to 28,040 and 61,240

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Solution

The third proportional to 28,040 and 61,240 is: 133,749.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,040 : 61,240 = 61,240 : x
  2. Step 2: Convert to fraction form
    28,040/61,240 = 61,240/x
  3. Step 3: Cross multiply
    28,040x = 61,240 × 61,240
  4. Step 4: Simplify right side
    28,040x = 3,750,337,600
  5. Step 5: Solve for x
    x = 3,750,337,600/28,040
  6. Step 6: Final answer
    x = 133,749.56

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.