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Finding the Fourth Proportional to 73,205.28, 109,866.24 and 28,843.20

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Solution

The fourth proportional to 73,205.28, 109,866.24 and 28,843.20 is: 43,287.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,205.28 : 109,866.24 = 28,843.20 : x
  2. Step 2: Convert to fraction form
    73,205.28/109,866.24 = 28,843.20/x
  3. Step 3: Cross multiply
    73,205.28x = 109,866.24 × 28,843.20
  4. Step 4: Simplify right side
    73,205.28x = 3,168,893,933.57
  5. Step 5: Solve for x
    x = 3,168,893,933.57/73,205.28
  6. Step 6: Final answer
    x = 43,287.78

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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.