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Finding the Third Proportional to 57,636 and 86,088

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Solution

The third proportional to 57,636 and 86,088 is: 128,585.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,636 : 86,088 = 86,088 : x
  2. Step 2: Convert to fraction form
    57,636/86,088 = 86,088/x
  3. Step 3: Cross multiply
    57,636x = 86,088 × 86,088
  4. Step 4: Simplify right side
    57,636x = 7,411,143,744
  5. Step 5: Solve for x
    x = 7,411,143,744/57,636
  6. Step 6: Final answer
    x = 128,585.32

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.