Home / 57,137.75-78,850.10-31,987.43

Finding the Fourth Proportional to 57,137.75, 78,850.10 and 31,987.43

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Solution

The fourth proportional to 57,137.75, 78,850.10 and 31,987.43 is: 44,142.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,137.75 : 78,850.10 = 31,987.43 : x
  2. Step 2: Convert to fraction form
    57,137.75/78,850.10 = 31,987.43/x
  3. Step 3: Cross multiply
    57,137.75x = 78,850.10 × 31,987.43
  4. Step 4: Simplify right side
    57,137.75x = 2,522,211,894.31
  5. Step 5: Solve for x
    x = 2,522,211,894.31/57,137.75
  6. Step 6: Final answer
    x = 44,142.65

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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.