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Finding the Fourth Proportional to 84,517.60, 126,760.20 and 25,355.20

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Solution

The fourth proportional to 84,517.60, 126,760.20 and 25,355.20 is: 38,027.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,517.60 : 126,760.20 = 25,355.20 : x
  2. Step 2: Convert to fraction form
    84,517.60/126,760.20 = 25,355.20/x
  3. Step 3: Cross multiply
    84,517.60x = 126,760.20 × 25,355.20
  4. Step 4: Simplify right side
    84,517.60x = 3,214,030,223.04
  5. Step 5: Solve for x
    x = 3,214,030,223.04/84,517.60
  6. Step 6: Final answer
    x = 38,027.94

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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.