Home / 85,078.18-127,635.72-25,912.30

Finding the Fourth Proportional to 85,078.18, 127,635.72 and 25,912.30

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Solution

The fourth proportional to 85,078.18, 127,635.72 and 25,912.30 is: 38,874.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,078.18 : 127,635.72 = 25,912.30 : x
  2. Step 2: Convert to fraction form
    85,078.18/127,635.72 = 25,912.30/x
  3. Step 3: Cross multiply
    85,078.18x = 127,635.72 × 25,912.30
  4. Step 4: Simplify right side
    85,078.18x = 3,307,335,067.36
  5. Step 5: Solve for x
    x = 3,307,335,067.36/85,078.18
  6. Step 6: Final answer
    x = 38,874.07

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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.