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Finding the Fourth Proportional to 86,029.32, 128,944.62 and 33,394.17

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Solution

The fourth proportional to 86,029.32, 128,944.62 and 33,394.17 is: 50,052.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,029.32 : 128,944.62 = 33,394.17 : x
  2. Step 2: Convert to fraction form
    86,029.32/128,944.62 = 33,394.17/x
  3. Step 3: Cross multiply
    86,029.32x = 128,944.62 × 33,394.17
  4. Step 4: Simplify right side
    86,029.32x = 4,305,998,560.87
  5. Step 5: Solve for x
    x = 4,305,998,560.87/86,029.32
  6. Step 6: Final answer
    x = 50,052.69

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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.