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Finding the Fourth Proportional to 57,352.46, 79,143.82 and 31,860.61

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Solution

The fourth proportional to 57,352.46, 79,143.82 and 31,860.61 is: 43,966.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,352.46 : 79,143.82 = 31,860.61 : x
  2. Step 2: Convert to fraction form
    57,352.46/79,143.82 = 31,860.61/x
  3. Step 3: Cross multiply
    57,352.46x = 79,143.82 × 31,860.61
  4. Step 4: Simplify right side
    57,352.46x = 2,521,570,105.42
  5. Step 5: Solve for x
    x = 2,521,570,105.42/57,352.46
  6. Step 6: Final answer
    x = 43,966.21

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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.