Home / 43,408.35-65,138.42-19,390.77

Finding the Fourth Proportional to 43,408.35, 65,138.42 and 19,390.77

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Solution

The fourth proportional to 43,408.35, 65,138.42 and 19,390.77 is: 29,097.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,408.35 : 65,138.42 = 19,390.77 : x
  2. Step 2: Convert to fraction form
    43,408.35/65,138.42 = 19,390.77/x
  3. Step 3: Cross multiply
    43,408.35x = 65,138.42 × 19,390.77
  4. Step 4: Simplify right side
    43,408.35x = 1,263,084,168.86
  5. Step 5: Solve for x
    x = 1,263,084,168.86/43,408.35
  6. Step 6: Final answer
    x = 29,097.72

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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.