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Finding the Third Proportional to 57,245 and 84,211.50

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Solution

The third proportional to 57,245 and 84,211.50 is: 123,881.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,245 : 84,211.50 = 84,211.50 : x
  2. Step 2: Convert to fraction form
    57,245/84,211.50 = 84,211.50/x
  3. Step 3: Cross multiply
    57,245x = 84,211.50 × 84,211.50
  4. Step 4: Simplify right side
    57,245x = 7,091,576,732.25
  5. Step 5: Solve for x
    x = 7,091,576,732.25/57,245
  6. Step 6: Final answer
    x = 123,881.16

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.