Home / 83,680.06-115,474.32-47,375.86

Finding the Fourth Proportional to 83,680.06, 115,474.32 and 47,375.86

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Solution

The fourth proportional to 83,680.06, 115,474.32 and 47,375.86 is: 65,376.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,680.06 : 115,474.32 = 47,375.86 : x
  2. Step 2: Convert to fraction form
    83,680.06/115,474.32 = 47,375.86/x
  3. Step 3: Cross multiply
    83,680.06x = 115,474.32 × 47,375.86
  4. Step 4: Simplify right side
    83,680.06x = 5,470,695,217.92
  5. Step 5: Solve for x
    x = 5,470,695,217.92/83,680.06
  6. Step 6: Final answer
    x = 65,376.33

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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.