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Finding the Third Proportional to 30,876 and 46,129

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Solution

The third proportional to 30,876 and 46,129 is: 68,917.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,876 : 46,129 = 46,129 : x
  2. Step 2: Convert to fraction form
    30,876/46,129 = 46,129/x
  3. Step 3: Cross multiply
    30,876x = 46,129 × 46,129
  4. Step 4: Simplify right side
    30,876x = 2,127,884,641
  5. Step 5: Solve for x
    x = 2,127,884,641/30,876
  6. Step 6: Final answer
    x = 68,917.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.