Home / 57,112.05-78,816.21-31,961.55

Finding the Fourth Proportional to 57,112.05, 78,816.21 and 31,961.55

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Solution

The fourth proportional to 57,112.05, 78,816.21 and 31,961.55 is: 44,107.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,112.05 : 78,816.21 = 31,961.55 : x
  2. Step 2: Convert to fraction form
    57,112.05/78,816.21 = 31,961.55/x
  3. Step 3: Cross multiply
    57,112.05x = 78,816.21 × 31,961.55
  4. Step 4: Simplify right side
    57,112.05x = 2,519,088,236.73
  5. Step 5: Solve for x
    x = 2,519,088,236.73/57,112.05
  6. Step 6: Final answer
    x = 44,107.82

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1.5x scale

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.