Home / 57,219.21-78,961.10-31,725.68

Finding the Fourth Proportional to 57,219.21, 78,961.10 and 31,725.68

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Solution

The fourth proportional to 57,219.21, 78,961.10 and 31,725.68 is: 43,780.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,219.21 : 78,961.10 = 31,725.68 : x
  2. Step 2: Convert to fraction form
    57,219.21/78,961.10 = 31,725.68/x
  3. Step 3: Cross multiply
    57,219.21x = 78,961.10 × 31,725.68
  4. Step 4: Simplify right side
    57,219.21x = 2,505,094,037.61
  5. Step 5: Solve for x
    x = 2,505,094,037.61/57,219.21
  6. Step 6: Final answer
    x = 43,780.65

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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.