Home / 72,650.24-108,917.44-66,818.56

Finding the Fourth Proportional to 72,650.24, 108,917.44 and 66,818.56

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Solution

The fourth proportional to 72,650.24, 108,917.44 and 66,818.56 is: 100,174.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,650.24 : 108,917.44 = 66,818.56 : x
  2. Step 2: Convert to fraction form
    72,650.24/108,917.44 = 66,818.56/x
  3. Step 3: Cross multiply
    72,650.24x = 108,917.44 × 66,818.56
  4. Step 4: Simplify right side
    72,650.24x = 7,277,706,499.69
  5. Step 5: Solve for x
    x = 7,277,706,499.69/72,650.24
  6. Step 6: Final answer
    x = 100,174.57

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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.