Home / 80,516.23-120,733.34-30,558.31

Finding the Fourth Proportional to 80,516.23, 120,733.34 and 30,558.31

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Solution

The fourth proportional to 80,516.23, 120,733.34 and 30,558.31 is: 45,821.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,516.23 : 120,733.34 = 30,558.31 : x
  2. Step 2: Convert to fraction form
    80,516.23/120,733.34 = 30,558.31/x
  3. Step 3: Cross multiply
    80,516.23x = 120,733.34 × 30,558.31
  4. Step 4: Simplify right side
    80,516.23x = 3,689,407,055.56
  5. Step 5: Solve for x
    x = 3,689,407,055.56/80,516.23
  6. Step 6: Final answer
    x = 45,821.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.