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Finding the Fourth Proportional to 84,175.20, 126,408.60 and 44,809.20

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Solution

The fourth proportional to 84,175.20, 126,408.60 and 44,809.20 is: 67,291.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,175.20 : 126,408.60 = 44,809.20 : x
  2. Step 2: Convert to fraction form
    84,175.20/126,408.60 = 44,809.20/x
  3. Step 3: Cross multiply
    84,175.20x = 126,408.60 × 44,809.20
  4. Step 4: Simplify right side
    84,175.20x = 5,664,268,239.12
  5. Step 5: Solve for x
    x = 5,664,268,239.12/84,175.20
  6. Step 6: Final answer
    x = 67,291.41

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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.