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Finding the Third Proportional to 28,928 and 43,700

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Solution

The third proportional to 28,928 and 43,700 is: 66,015.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,928 : 43,700 = 43,700 : x
  2. Step 2: Convert to fraction form
    28,928/43,700 = 43,700/x
  3. Step 3: Cross multiply
    28,928x = 43,700 × 43,700
  4. Step 4: Simplify right side
    28,928x = 1,909,690,000
  5. Step 5: Solve for x
    x = 1,909,690,000/28,928
  6. Step 6: Final answer
    x = 66,015.28

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.