Home / 57,221.03-78,961.85-31,725.90

Finding the Fourth Proportional to 57,221.03, 78,961.85 and 31,725.90

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Solution

The fourth proportional to 57,221.03, 78,961.85 and 31,725.90 is: 43,779.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,221.03 : 78,961.85 = 31,725.90 : x
  2. Step 2: Convert to fraction form
    57,221.03/78,961.85 = 31,725.90/x
  3. Step 3: Cross multiply
    57,221.03x = 78,961.85 × 31,725.90
  4. Step 4: Simplify right side
    57,221.03x = 2,505,135,756.92
  5. Step 5: Solve for x
    x = 2,505,135,756.92/57,221.03
  6. Step 6: Final answer
    x = 43,779.98

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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.