Home / 57,078.94-78,766.90-31,584.86

Finding the Fourth Proportional to 57,078.94, 78,766.90 and 31,584.86

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Solution

The fourth proportional to 57,078.94, 78,766.90 and 31,584.86 is: 43,585.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,078.94 : 78,766.90 = 31,584.86 : x
  2. Step 2: Convert to fraction form
    57,078.94/78,766.90 = 31,584.86/x
  3. Step 3: Cross multiply
    57,078.94x = 78,766.90 × 31,584.86
  4. Step 4: Simplify right side
    57,078.94x = 2,487,841,351.21
  5. Step 5: Solve for x
    x = 2,487,841,351.21/57,078.94
  6. Step 6: Final answer
    x = 43,585.98

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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.