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Finding the Third Proportional to 29,621 and 64,156

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Solution

The third proportional to 29,621 and 64,156 is: 138,955.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,621 : 64,156 = 64,156 : x
  2. Step 2: Convert to fraction form
    29,621/64,156 = 64,156/x
  3. Step 3: Cross multiply
    29,621x = 64,156 × 64,156
  4. Step 4: Simplify right side
    29,621x = 4,115,992,336
  5. Step 5: Solve for x
    x = 4,115,992,336/29,621
  6. Step 6: Final answer
    x = 138,955.21

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.