Home / 89,408.11-123,383.36-49,121.53

Finding the Fourth Proportional to 89,408.11, 123,383.36 and 49,121.53

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Solution

The fourth proportional to 89,408.11, 123,383.36 and 49,121.53 is: 67,787.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,408.11 : 123,383.36 = 49,121.53 : x
  2. Step 2: Convert to fraction form
    89,408.11/123,383.36 = 49,121.53/x
  3. Step 3: Cross multiply
    89,408.11x = 123,383.36 × 49,121.53
  4. Step 4: Simplify right side
    89,408.11x = 6,060,779,419.74
  5. Step 5: Solve for x
    x = 6,060,779,419.74/89,408.11
  6. Step 6: Final answer
    x = 67,787.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.