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Finding the Third Proportional to 39,140 and 84,616

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Solution

The third proportional to 39,140 and 84,616 is: 182,929.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,140 : 84,616 = 84,616 : x
  2. Step 2: Convert to fraction form
    39,140/84,616 = 84,616/x
  3. Step 3: Cross multiply
    39,140x = 84,616 × 84,616
  4. Step 4: Simplify right side
    39,140x = 7,159,867,456
  5. Step 5: Solve for x
    x = 7,159,867,456/39,140
  6. Step 6: Final answer
    x = 182,929.67

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.