Home / 57,219.08-78,961.94-31,725.45

Finding the Fourth Proportional to 57,219.08, 78,961.94 and 31,725.45

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Solution

The fourth proportional to 57,219.08, 78,961.94 and 31,725.45 is: 43,780.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,219.08 : 78,961.94 = 31,725.45 : x
  2. Step 2: Convert to fraction form
    57,219.08/78,961.94 = 31,725.45/x
  3. Step 3: Cross multiply
    57,219.08x = 78,961.94 × 31,725.45
  4. Step 4: Simplify right side
    57,219.08x = 2,505,103,079.37
  5. Step 5: Solve for x
    x = 2,505,103,079.37/57,219.08
  6. Step 6: Final answer
    x = 43,780.90

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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.