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Finding the Third Proportional to 30,186 and 64,972.13

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Solution

The third proportional to 30,186 and 64,972.13 is: 139,845.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,186 : 64,972.13 = 64,972.13 : x
  2. Step 2: Convert to fraction form
    30,186/64,972.13 = 64,972.13/x
  3. Step 3: Cross multiply
    30,186x = 64,972.13 × 64,972.13
  4. Step 4: Simplify right side
    30,186x = 4,221,377,027.02
  5. Step 5: Solve for x
    x = 4,221,377,027.02/30,186
  6. Step 6: Final answer
    x = 139,845.53

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.