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Finding the Fourth Proportional to 85,081.60, 127,617.73 and 25,912.31

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Solution

The fourth proportional to 85,081.60, 127,617.73 and 25,912.31 is: 38,867.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,081.60 : 127,617.73 = 25,912.31 : x
  2. Step 2: Convert to fraction form
    85,081.60/127,617.73 = 25,912.31/x
  3. Step 3: Cross multiply
    85,081.60x = 127,617.73 × 25,912.31
  4. Step 4: Simplify right side
    85,081.60x = 3,306,870,181.26
  5. Step 5: Solve for x
    x = 3,306,870,181.26/85,081.60
  6. Step 6: Final answer
    x = 38,867.04

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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.