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Finding the Third Proportional to 30,640 and 43,358

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Solution

The third proportional to 30,640 and 43,358 is: 61,354.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,640 : 43,358 = 43,358 : x
  2. Step 2: Convert to fraction form
    30,640/43,358 = 43,358/x
  3. Step 3: Cross multiply
    30,640x = 43,358 × 43,358
  4. Step 4: Simplify right side
    30,640x = 1,879,916,164
  5. Step 5: Solve for x
    x = 1,879,916,164/30,640
  6. Step 6: Final answer
    x = 61,354.97

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.