Home / 72,434.20-108,651.30-19,843.60

Finding the Fourth Proportional to 72,434.20, 108,651.30 and 19,843.60

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Solution

The fourth proportional to 72,434.20, 108,651.30 and 19,843.60 is: 29,765.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,434.20 : 108,651.30 = 19,843.60 : x
  2. Step 2: Convert to fraction form
    72,434.20/108,651.30 = 19,843.60/x
  3. Step 3: Cross multiply
    72,434.20x = 108,651.30 × 19,843.60
  4. Step 4: Simplify right side
    72,434.20x = 2,156,032,936.68
  5. Step 5: Solve for x
    x = 2,156,032,936.68/72,434.20
  6. Step 6: Final answer
    x = 29,765.40

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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.