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Finding the Third Proportional to 39,429 and 85,176

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Solution

The third proportional to 39,429 and 85,176 is: 184,000.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,429 : 85,176 = 85,176 : x
  2. Step 2: Convert to fraction form
    39,429/85,176 = 85,176/x
  3. Step 3: Cross multiply
    39,429x = 85,176 × 85,176
  4. Step 4: Simplify right side
    39,429x = 7,254,950,976
  5. Step 5: Solve for x
    x = 7,254,950,976/39,429
  6. Step 6: Final answer
    x = 184,000.38

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.