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Finding the Third Proportional to 28,948 and 43,990

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Solution

The third proportional to 28,948 and 43,990 is: 66,848.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,948 : 43,990 = 43,990 : x
  2. Step 2: Convert to fraction form
    28,948/43,990 = 43,990/x
  3. Step 3: Cross multiply
    28,948x = 43,990 × 43,990
  4. Step 4: Simplify right side
    28,948x = 1,935,120,100
  5. Step 5: Solve for x
    x = 1,935,120,100/28,948
  6. Step 6: Final answer
    x = 66,848.14

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.