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Finding the Third Proportional to 57,918.38 and 90,261

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Solution

The third proportional to 57,918.38 and 90,261 is: 140,664.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,918.38 : 90,261 = 90,261 : x
  2. Step 2: Convert to fraction form
    57,918.38/90,261 = 90,261/x
  3. Step 3: Cross multiply
    57,918.38x = 90,261 × 90,261
  4. Step 4: Simplify right side
    57,918.38x = 8,147,048,121
  5. Step 5: Solve for x
    x = 8,147,048,121/57,918.38
  6. Step 6: Final answer
    x = 140,664.31

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.