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Finding the Fourth Proportional to 85,251.82, 127,956.60 and 43,161.48

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Solution

The fourth proportional to 85,251.82, 127,956.60 and 43,161.48 is: 64,782.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,251.82 : 127,956.60 = 43,161.48 : x
  2. Step 2: Convert to fraction form
    85,251.82/127,956.60 = 43,161.48/x
  3. Step 3: Cross multiply
    85,251.82x = 127,956.60 × 43,161.48
  4. Step 4: Simplify right side
    85,251.82x = 5,522,796,231.77
  5. Step 5: Solve for x
    x = 5,522,796,231.77/85,251.82
  6. Step 6: Final answer
    x = 64,782.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.