Home / 72,375.63-108,563.49-19,785.57

Finding the Fourth Proportional to 72,375.63, 108,563.49 and 19,785.57

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Solution

The fourth proportional to 72,375.63, 108,563.49 and 19,785.57 is: 29,678.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,375.63 : 108,563.49 = 19,785.57 : x
  2. Step 2: Convert to fraction form
    72,375.63/108,563.49 = 19,785.57/x
  3. Step 3: Cross multiply
    72,375.63x = 108,563.49 × 19,785.57
  4. Step 4: Simplify right side
    72,375.63x = 2,147,990,530.84
  5. Step 5: Solve for x
    x = 2,147,990,530.84/72,375.63
  6. Step 6: Final answer
    x = 29,678.37

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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.