Home / 86,288.78-129,380.31-33,636.75

Finding the Fourth Proportional to 86,288.78, 129,380.31 and 33,636.75

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Solution

The fourth proportional to 86,288.78, 129,380.31 and 33,636.75 is: 50,434.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,288.78 : 129,380.31 = 33,636.75 : x
  2. Step 2: Convert to fraction form
    86,288.78/129,380.31 = 33,636.75/x
  3. Step 3: Cross multiply
    86,288.78x = 129,380.31 × 33,636.75
  4. Step 4: Simplify right side
    86,288.78x = 4,351,933,142.39
  5. Step 5: Solve for x
    x = 4,351,933,142.39/86,288.78
  6. Step 6: Final answer
    x = 50,434.52

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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.