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Finding the Third Proportional to 39,111 and 51,862.50

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Solution

The third proportional to 39,111 and 51,862.50 is: 68,771.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,111 : 51,862.50 = 51,862.50 : x
  2. Step 2: Convert to fraction form
    39,111/51,862.50 = 51,862.50/x
  3. Step 3: Cross multiply
    39,111x = 51,862.50 × 51,862.50
  4. Step 4: Simplify right side
    39,111x = 2,689,718,906.25
  5. Step 5: Solve for x
    x = 2,689,718,906.25/39,111
  6. Step 6: Final answer
    x = 68,771.42

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.