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Finding the Third Proportional to 28,618 and 43,777

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Solution

The third proportional to 28,618 and 43,777 is: 66,965.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,618 : 43,777 = 43,777 : x
  2. Step 2: Convert to fraction form
    28,618/43,777 = 43,777/x
  3. Step 3: Cross multiply
    28,618x = 43,777 × 43,777
  4. Step 4: Simplify right side
    28,618x = 1,916,425,729
  5. Step 5: Solve for x
    x = 1,916,425,729/28,618
  6. Step 6: Final answer
    x = 66,965.75

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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.