Home / 89,655.21-123,725.09-49,372.72

Finding the Fourth Proportional to 89,655.21, 123,725.09 and 49,372.72

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Solution

The fourth proportional to 89,655.21, 123,725.09 and 49,372.72 is: 68,134.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,655.21 : 123,725.09 = 49,372.72 : x
  2. Step 2: Convert to fraction form
    89,655.21/123,725.09 = 49,372.72/x
  3. Step 3: Cross multiply
    89,655.21x = 123,725.09 × 49,372.72
  4. Step 4: Simplify right side
    89,655.21x = 6,108,644,039.66
  5. Step 5: Solve for x
    x = 6,108,644,039.66/89,655.21
  6. Step 6: Final answer
    x = 68,134.85

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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.