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Finding the Fourth Proportional to 115,409.40, 173,138.40 and 36,531.60

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Solution

The fourth proportional to 115,409.40, 173,138.40 and 36,531.60 is: 54,805.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,409.40 : 173,138.40 = 36,531.60 : x
  2. Step 2: Convert to fraction form
    115,409.40/173,138.40 = 36,531.60/x
  3. Step 3: Cross multiply
    115,409.40x = 173,138.40 × 36,531.60
  4. Step 4: Simplify right side
    115,409.40x = 6,325,022,773.44
  5. Step 5: Solve for x
    x = 6,325,022,773.44/115,409.40
  6. Step 6: Final answer
    x = 54,805.09

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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.