Home / 53,408.72-80,112.20-21,811.84

Finding the Fourth Proportional to 53,408.72, 80,112.20 and 21,811.84

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Solution

The fourth proportional to 53,408.72, 80,112.20 and 21,811.84 is: 32,717.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,408.72 : 80,112.20 = 21,811.84 : x
  2. Step 2: Convert to fraction form
    53,408.72/80,112.20 = 21,811.84/x
  3. Step 3: Cross multiply
    53,408.72x = 80,112.20 × 21,811.84
  4. Step 4: Simplify right side
    53,408.72x = 1,747,394,488.45
  5. Step 5: Solve for x
    x = 1,747,394,488.45/53,408.72
  6. Step 6: Final answer
    x = 32,717.40

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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.