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Finding the Third Proportional to 30,640 and 46,851

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Solution

The third proportional to 30,640 and 46,851 is: 71,638.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,640 : 46,851 = 46,851 : x
  2. Step 2: Convert to fraction form
    30,640/46,851 = 46,851/x
  3. Step 3: Cross multiply
    30,640x = 46,851 × 46,851
  4. Step 4: Simplify right side
    30,640x = 2,195,016,201
  5. Step 5: Solve for x
    x = 2,195,016,201/30,640
  6. Step 6: Final answer
    x = 71,638.91

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.