Home / 72,555.12-108,856.92-28,183.32

Finding the Fourth Proportional to 72,555.12, 108,856.92 and 28,183.32

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Solution

The fourth proportional to 72,555.12, 108,856.92 and 28,183.32 is: 42,284.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,555.12 : 108,856.92 = 28,183.32 : x
  2. Step 2: Convert to fraction form
    72,555.12/108,856.92 = 28,183.32/x
  3. Step 3: Cross multiply
    72,555.12x = 108,856.92 × 28,183.32
  4. Step 4: Simplify right side
    72,555.12x = 3,067,949,410.57
  5. Step 5: Solve for x
    x = 3,067,949,410.57/72,555.12
  6. Step 6: Final answer
    x = 42,284.40

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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.