Home / 57,213.60-78,943.52-31,718.86

Finding the Fourth Proportional to 57,213.60, 78,943.52 and 31,718.86

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Solution

The fourth proportional to 57,213.60, 78,943.52 and 31,718.86 is: 43,765.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,213.60 : 78,943.52 = 31,718.86 : x
  2. Step 2: Convert to fraction form
    57,213.60/78,943.52 = 31,718.86/x
  3. Step 3: Cross multiply
    57,213.60x = 78,943.52 × 31,718.86
  4. Step 4: Simplify right side
    57,213.60x = 2,503,998,458.79
  5. Step 5: Solve for x
    x = 2,503,998,458.79/57,213.60
  6. Step 6: Final answer
    x = 43,765.79

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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.