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Finding the Third Proportional to 18,578 and 39,746

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Solution

The third proportional to 18,578 and 39,746 is: 85,033.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,578 : 39,746 = 39,746 : x
  2. Step 2: Convert to fraction form
    18,578/39,746 = 39,746/x
  3. Step 3: Cross multiply
    18,578x = 39,746 × 39,746
  4. Step 4: Simplify right side
    18,578x = 1,579,744,516
  5. Step 5: Solve for x
    x = 1,579,744,516/18,578
  6. Step 6: Final answer
    x = 85,033.08

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.