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Finding the Third Proportional to 39,126 and 54,585

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Solution

The third proportional to 39,126 and 54,585 is: 76,151.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,126 : 54,585 = 54,585 : x
  2. Step 2: Convert to fraction form
    39,126/54,585 = 54,585/x
  3. Step 3: Cross multiply
    39,126x = 54,585 × 54,585
  4. Step 4: Simplify right side
    39,126x = 2,979,522,225
  5. Step 5: Solve for x
    x = 2,979,522,225/39,126
  6. Step 6: Final answer
    x = 76,151.98

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.