Home / 85,049.20-127,578.36-25,886.80

Finding the Fourth Proportional to 85,049.20, 127,578.36 and 25,886.80

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Solution

The fourth proportional to 85,049.20, 127,578.36 and 25,886.80 is: 38,831.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,049.20 : 127,578.36 = 25,886.80 : x
  2. Step 2: Convert to fraction form
    85,049.20/127,578.36 = 25,886.80/x
  3. Step 3: Cross multiply
    85,049.20x = 127,578.36 × 25,886.80
  4. Step 4: Simplify right side
    85,049.20x = 3,302,595,489.65
  5. Step 5: Solve for x
    x = 3,302,595,489.65/85,049.20
  6. Step 6: Final answer
    x = 38,831.59

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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.