Home / 84,530.12-126,747.78-57,906.20

Finding the Fourth Proportional to 84,530.12, 126,747.78 and 57,906.20

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Solution

The fourth proportional to 84,530.12, 126,747.78 and 57,906.20 is: 86,826.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,530.12 : 126,747.78 = 57,906.20 : x
  2. Step 2: Convert to fraction form
    84,530.12/126,747.78 = 57,906.20/x
  3. Step 3: Cross multiply
    84,530.12x = 126,747.78 × 57,906.20
  4. Step 4: Simplify right side
    84,530.12x = 7,339,482,298.24
  5. Step 5: Solve for x
    x = 7,339,482,298.24/84,530.12
  6. Step 6: Final answer
    x = 86,826.83

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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.