Home / 85,936.32-128,923.68-35,991.60

Finding the Fourth Proportional to 85,936.32, 128,923.68 and 35,991.60

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Solution

The fourth proportional to 85,936.32, 128,923.68 and 35,991.60 is: 53,995.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,936.32 : 128,923.68 = 35,991.60 : x
  2. Step 2: Convert to fraction form
    85,936.32/128,923.68 = 35,991.60/x
  3. Step 3: Cross multiply
    85,936.32x = 128,923.68 × 35,991.60
  4. Step 4: Simplify right side
    85,936.32x = 4,640,169,521.09
  5. Step 5: Solve for x
    x = 4,640,169,521.09/85,936.32
  6. Step 6: Final answer
    x = 53,995.44

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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.