Home / 85,019.20-127,533.60-25,856.80

Finding the Fourth Proportional to 85,019.20, 127,533.60 and 25,856.80

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Solution

The fourth proportional to 85,019.20, 127,533.60 and 25,856.80 is: 38,786.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,019.20 : 127,533.60 = 25,856.80 : x
  2. Step 2: Convert to fraction form
    85,019.20/127,533.60 = 25,856.80/x
  3. Step 3: Cross multiply
    85,019.20x = 127,533.60 × 25,856.80
  4. Step 4: Simplify right side
    85,019.20x = 3,297,610,788.48
  5. Step 5: Solve for x
    x = 3,297,610,788.48/85,019.20
  6. Step 6: Final answer
    x = 38,786.66

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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.