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Finding the Fourth Proportional to 57,321.66, 79,102.78 and 31,826.71

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Solution

The fourth proportional to 57,321.66, 79,102.78 and 31,826.71 is: 43,920.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,321.66 : 79,102.78 = 31,826.71 : x
  2. Step 2: Convert to fraction form
    57,321.66/79,102.78 = 31,826.71/x
  3. Step 3: Cross multiply
    57,321.66x = 79,102.78 × 31,826.71
  4. Step 4: Simplify right side
    57,321.66x = 2,517,580,684.61
  5. Step 5: Solve for x
    x = 2,517,580,684.61/57,321.66
  6. Step 6: Final answer
    x = 43,920.23

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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.