Home / 75,183.39-112,731.30-28,439.91

Finding the Fourth Proportional to 75,183.39, 112,731.30 and 28,439.91

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Solution

The fourth proportional to 75,183.39, 112,731.30 and 28,439.91 is: 42,643.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,183.39 : 112,731.30 = 28,439.91 : x
  2. Step 2: Convert to fraction form
    75,183.39/112,731.30 = 28,439.91/x
  3. Step 3: Cross multiply
    75,183.39x = 112,731.30 × 28,439.91
  4. Step 4: Simplify right side
    75,183.39x = 3,206,068,026.18
  5. Step 5: Solve for x
    x = 3,206,068,026.18/75,183.39
  6. Step 6: Final answer
    x = 42,643.30

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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.