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Finding the Third Proportional to 29,918 and 64,789

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Solution

The third proportional to 29,918 and 64,789 is: 140,303.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,918 : 64,789 = 64,789 : x
  2. Step 2: Convert to fraction form
    29,918/64,789 = 64,789/x
  3. Step 3: Cross multiply
    29,918x = 64,789 × 64,789
  4. Step 4: Simplify right side
    29,918x = 4,197,614,521
  5. Step 5: Solve for x
    x = 4,197,614,521/29,918
  6. Step 6: Final answer
    x = 140,303.98

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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.