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Finding the Third Proportional to 57,906 and 86,858

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Solution

The third proportional to 57,906 and 86,858 is: 130,285.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,906 : 86,858 = 86,858 : x
  2. Step 2: Convert to fraction form
    57,906/86,858 = 86,858/x
  3. Step 3: Cross multiply
    57,906x = 86,858 × 86,858
  4. Step 4: Simplify right side
    57,906x = 7,544,312,164
  5. Step 5: Solve for x
    x = 7,544,312,164/57,906
  6. Step 6: Final answer
    x = 130,285.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.