Home / 45,408.44-68,115.84-12,128.36

Finding the Fourth Proportional to 45,408.44, 68,115.84 and 12,128.36

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Solution

The fourth proportional to 45,408.44, 68,115.84 and 12,128.36 is: 18,193.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,408.44 : 68,115.84 = 12,128.36 : x
  2. Step 2: Convert to fraction form
    45,408.44/68,115.84 = 12,128.36/x
  3. Step 3: Cross multiply
    45,408.44x = 68,115.84 × 12,128.36
  4. Step 4: Simplify right side
    45,408.44x = 826,133,429.22
  5. Step 5: Solve for x
    x = 826,133,429.22/45,408.44
  6. Step 6: Final answer
    x = 18,193.39

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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.