Home / 72,651.24-108,918.94-66,819.56

Finding the Fourth Proportional to 72,651.24, 108,918.94 and 66,819.56

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Solution

The fourth proportional to 72,651.24, 108,918.94 and 66,819.56 is: 100,176.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,651.24 : 108,918.94 = 66,819.56 : x
  2. Step 2: Convert to fraction form
    72,651.24/108,918.94 = 66,819.56/x
  3. Step 3: Cross multiply
    72,651.24x = 108,918.94 × 66,819.56
  4. Step 4: Simplify right side
    72,651.24x = 7,277,915,646.47
  5. Step 5: Solve for x
    x = 7,277,915,646.47/72,651.24
  6. Step 6: Final answer
    x = 100,176.07

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1.5x scale

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.