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Finding the Third Proportional to 39,804 and 54,090

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Solution

The third proportional to 39,804 and 54,090 is: 73,503.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,804 : 54,090 = 54,090 : x
  2. Step 2: Convert to fraction form
    39,804/54,090 = 54,090/x
  3. Step 3: Cross multiply
    39,804x = 54,090 × 54,090
  4. Step 4: Simplify right side
    39,804x = 2,925,728,100
  5. Step 5: Solve for x
    x = 2,925,728,100/39,804
  6. Step 6: Final answer
    x = 73,503.37

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.