Home / 57,211.61-78,940.76-31,716.86

Finding the Fourth Proportional to 57,211.61, 78,940.76 and 31,716.86

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Solution

The fourth proportional to 57,211.61, 78,940.76 and 31,716.86 is: 43,763.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,211.61 : 78,940.76 = 31,716.86 : x
  2. Step 2: Convert to fraction form
    57,211.61/78,940.76 = 31,716.86/x
  3. Step 3: Cross multiply
    57,211.61x = 78,940.76 × 31,716.86
  4. Step 4: Simplify right side
    57,211.61x = 2,503,752,479.93
  5. Step 5: Solve for x
    x = 2,503,752,479.93/57,211.61
  6. Step 6: Final answer
    x = 43,763.02

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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.