Home / 57,186.92-78,921.09-31,692.75

Finding the Fourth Proportional to 57,186.92, 78,921.09 and 31,692.75

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Solution

The fourth proportional to 57,186.92, 78,921.09 and 31,692.75 is: 43,737.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,186.92 : 78,921.09 = 31,692.75 : x
  2. Step 2: Convert to fraction form
    57,186.92/78,921.09 = 31,692.75/x
  3. Step 3: Cross multiply
    57,186.92x = 78,921.09 × 31,692.75
  4. Step 4: Simplify right side
    57,186.92x = 2,501,226,375.10
  5. Step 5: Solve for x
    x = 2,501,226,375.10/57,186.92
  6. Step 6: Final answer
    x = 43,737.74

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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.