Home / 72,122.20-108,215.70-25,408.60

Finding the Fourth Proportional to 72,122.20, 108,215.70 and 25,408.60

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Solution

The fourth proportional to 72,122.20, 108,215.70 and 25,408.60 is: 38,124.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,122.20 : 108,215.70 = 25,408.60 : x
  2. Step 2: Convert to fraction form
    72,122.20/108,215.70 = 25,408.60/x
  3. Step 3: Cross multiply
    72,122.20x = 108,215.70 × 25,408.60
  4. Step 4: Simplify right side
    72,122.20x = 2,749,609,435.02
  5. Step 5: Solve for x
    x = 2,749,609,435.02/72,122.20
  6. Step 6: Final answer
    x = 38,124.31

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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.