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Finding the Fourth Proportional to 90,975, 125,546.31 and 53,250.06

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Solution

The fourth proportional to 90,975, 125,546.31 and 53,250.06 is: 73,485.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,975 : 125,546.31 = 53,250.06 : x
  2. Step 2: Convert to fraction form
    90,975/125,546.31 = 53,250.06/x
  3. Step 3: Cross multiply
    90,975x = 125,546.31 × 53,250.06
  4. Step 4: Simplify right side
    90,975x = 6,685,348,540.28
  5. Step 5: Solve for x
    x = 6,685,348,540.28/90,975
  6. Step 6: Final answer
    x = 73,485.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.