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Finding the Third Proportional to 57,688 and 86,532

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Solution

The third proportional to 57,688 and 86,532 is: 129,798

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,688 : 86,532 = 86,532 : x
  2. Step 2: Convert to fraction form
    57,688/86,532 = 86,532/x
  3. Step 3: Cross multiply
    57,688x = 86,532 × 86,532
  4. Step 4: Simplify right side
    57,688x = 7,487,787,024
  5. Step 5: Solve for x
    x = 7,487,787,024/57,688
  6. Step 6: Final answer
    x = 129,798

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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.