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Finding the Third Proportional to 28,007 and 43,355

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Solution

The third proportional to 28,007 and 43,355 is: 67,113.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,007 : 43,355 = 43,355 : x
  2. Step 2: Convert to fraction form
    28,007/43,355 = 43,355/x
  3. Step 3: Cross multiply
    28,007x = 43,355 × 43,355
  4. Step 4: Simplify right side
    28,007x = 1,879,656,025
  5. Step 5: Solve for x
    x = 1,879,656,025/28,007
  6. Step 6: Final answer
    x = 67,113.79

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.