Home / 45,408.53-68,123.72-14,243.78

Finding the Fourth Proportional to 45,408.53, 68,123.72 and 14,243.78

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Solution

The fourth proportional to 45,408.53, 68,123.72 and 14,243.78 is: 21,369.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,408.53 : 68,123.72 = 14,243.78 : x
  2. Step 2: Convert to fraction form
    45,408.53/68,123.72 = 14,243.78/x
  3. Step 3: Cross multiply
    45,408.53x = 68,123.72 × 14,243.78
  4. Step 4: Simplify right side
    45,408.53x = 970,338,975.45
  5. Step 5: Solve for x
    x = 970,338,975.45/45,408.53
  6. Step 6: Final answer
    x = 21,369.09

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1.5x scale

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.