Home / 43,408.36-65,115.78-18,445.60

Finding the Fourth Proportional to 43,408.36, 65,115.78 and 18,445.60

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Solution

The fourth proportional to 43,408.36, 65,115.78 and 18,445.60 is: 27,669.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,408.36 : 65,115.78 = 18,445.60 : x
  2. Step 2: Convert to fraction form
    43,408.36/65,115.78 = 18,445.60/x
  3. Step 3: Cross multiply
    43,408.36x = 65,115.78 × 18,445.60
  4. Step 4: Simplify right side
    43,408.36x = 1,201,099,631.57
  5. Step 5: Solve for x
    x = 1,201,099,631.57/43,408.36
  6. Step 6: Final answer
    x = 27,669.78

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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.