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Finding the Third Proportional to 39,558 and 86,410

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Solution

The third proportional to 39,558 and 86,410 is: 188,752.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,558 : 86,410 = 86,410 : x
  2. Step 2: Convert to fraction form
    39,558/86,410 = 86,410/x
  3. Step 3: Cross multiply
    39,558x = 86,410 × 86,410
  4. Step 4: Simplify right side
    39,558x = 7,466,688,100
  5. Step 5: Solve for x
    x = 7,466,688,100/39,558
  6. Step 6: Final answer
    x = 188,752.92

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.