Home / 85,081.20-127,626.60-25,918.80

Finding the Fourth Proportional to 85,081.20, 127,626.60 and 25,918.80

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Solution

The fourth proportional to 85,081.20, 127,626.60 and 25,918.80 is: 38,879.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,081.20 : 127,626.60 = 25,918.80 : x
  2. Step 2: Convert to fraction form
    85,081.20/127,626.60 = 25,918.80/x
  3. Step 3: Cross multiply
    85,081.20x = 127,626.60 × 25,918.80
  4. Step 4: Simplify right side
    85,081.20x = 3,307,928,320.08
  5. Step 5: Solve for x
    x = 3,307,928,320.08/85,081.20
  6. Step 6: Final answer
    x = 38,879.66

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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.