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Finding the Third Proportional to 39,012 and 85,458

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Solution

The third proportional to 39,012 and 85,458 is: 187,200.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,012 : 85,458 = 85,458 : x
  2. Step 2: Convert to fraction form
    39,012/85,458 = 85,458/x
  3. Step 3: Cross multiply
    39,012x = 85,458 × 85,458
  4. Step 4: Simplify right side
    39,012x = 7,303,069,764
  5. Step 5: Solve for x
    x = 7,303,069,764/39,012
  6. Step 6: Final answer
    x = 187,200.60

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.