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Finding the Fourth Proportional to 86,027.46, 128,991.96 and 33,375.48

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Solution

The fourth proportional to 86,027.46, 128,991.96 and 33,375.48 is: 50,044.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,027.46 : 128,991.96 = 33,375.48 : x
  2. Step 2: Convert to fraction form
    86,027.46/128,991.96 = 33,375.48/x
  3. Step 3: Cross multiply
    86,027.46x = 128,991.96 × 33,375.48
  4. Step 4: Simplify right side
    86,027.46x = 4,305,168,581.14
  5. Step 5: Solve for x
    x = 4,305,168,581.14/86,027.46
  6. Step 6: Final answer
    x = 50,044.12

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1.5x scale

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.