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Finding the Third Proportional to 39,645 and 54,364.50

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Solution

The third proportional to 39,645 and 54,364.50 is: 74,549.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,645 : 54,364.50 = 54,364.50 : x
  2. Step 2: Convert to fraction form
    39,645/54,364.50 = 54,364.50/x
  3. Step 3: Cross multiply
    39,645x = 54,364.50 × 54,364.50
  4. Step 4: Simplify right side
    39,645x = 2,955,498,860.25
  5. Step 5: Solve for x
    x = 2,955,498,860.25/39,645
  6. Step 6: Final answer
    x = 74,549.09

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.