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Finding the Third Proportional to 29,616 and 64,880

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Solution

The third proportional to 29,616 and 64,880 is: 142,133.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,616 : 64,880 = 64,880 : x
  2. Step 2: Convert to fraction form
    29,616/64,880 = 64,880/x
  3. Step 3: Cross multiply
    29,616x = 64,880 × 64,880
  4. Step 4: Simplify right side
    29,616x = 4,209,414,400
  5. Step 5: Solve for x
    x = 4,209,414,400/29,616
  6. Step 6: Final answer
    x = 142,133.12

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.