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Finding the Third Proportional to 30,884 and 66,664

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Solution

The third proportional to 30,884 and 66,664 is: 143,896.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,884 : 66,664 = 66,664 : x
  2. Step 2: Convert to fraction form
    30,884/66,664 = 66,664/x
  3. Step 3: Cross multiply
    30,884x = 66,664 × 66,664
  4. Step 4: Simplify right side
    30,884x = 4,444,088,896
  5. Step 5: Solve for x
    x = 4,444,088,896/30,884
  6. Step 6: Final answer
    x = 143,896.16

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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.