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Finding the Third Proportional to 30,183 and 64,989

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Solution

The third proportional to 30,183 and 64,989 is: 139,932.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,183 : 64,989 = 64,989 : x
  2. Step 2: Convert to fraction form
    30,183/64,989 = 64,989/x
  3. Step 3: Cross multiply
    30,183x = 64,989 × 64,989
  4. Step 4: Simplify right side
    30,183x = 4,223,570,121
  5. Step 5: Solve for x
    x = 4,223,570,121/30,183
  6. Step 6: Final answer
    x = 139,932.08

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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.