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Finding the Fourth Proportional to 85,081.48, 127,628.70 and 25,922.20

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Solution

The fourth proportional to 85,081.48, 127,628.70 and 25,922.20 is: 38,885.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,081.48 : 127,628.70 = 25,922.20 : x
  2. Step 2: Convert to fraction form
    85,081.48/127,628.70 = 25,922.20/x
  3. Step 3: Cross multiply
    85,081.48x = 127,628.70 × 25,922.20
  4. Step 4: Simplify right side
    85,081.48x = 3,308,416,687.14
  5. Step 5: Solve for x
    x = 3,308,416,687.14/85,081.48
  6. Step 6: Final answer
    x = 38,885.27

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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.