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Finding the Third Proportional to 30,505 and 66,158

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Solution

The third proportional to 30,505 and 66,158 is: 143,480.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,505 : 66,158 = 66,158 : x
  2. Step 2: Convert to fraction form
    30,505/66,158 = 66,158/x
  3. Step 3: Cross multiply
    30,505x = 66,158 × 66,158
  4. Step 4: Simplify right side
    30,505x = 4,376,880,964
  5. Step 5: Solve for x
    x = 4,376,880,964/30,505
  6. Step 6: Final answer
    x = 143,480.77

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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.