Home / 85,383.28-128,052.59-25,395.62

Finding the Fourth Proportional to 85,383.28, 128,052.59 and 25,395.62

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Solution

The fourth proportional to 85,383.28, 128,052.59 and 25,395.62 is: 38,086.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,383.28 : 128,052.59 = 25,395.62 : x
  2. Step 2: Convert to fraction form
    85,383.28/128,052.59 = 25,395.62/x
  3. Step 3: Cross multiply
    85,383.28x = 128,052.59 × 25,395.62
  4. Step 4: Simplify right side
    85,383.28x = 3,251,974,338.88
  5. Step 5: Solve for x
    x = 3,251,974,338.88/85,383.28
  6. Step 6: Final answer
    x = 38,086.78

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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.