Home / 85,628.58-118,138.38-49,789.11

Finding the Fourth Proportional to 85,628.58, 118,138.38 and 49,789.11

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Solution

The fourth proportional to 85,628.58, 118,138.38 and 49,789.11 is: 68,692.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,628.58 : 118,138.38 = 49,789.11 : x
  2. Step 2: Convert to fraction form
    85,628.58/118,138.38 = 49,789.11/x
  3. Step 3: Cross multiply
    85,628.58x = 118,138.38 × 49,789.11
  4. Step 4: Simplify right side
    85,628.58x = 5,882,004,797.04
  5. Step 5: Solve for x
    x = 5,882,004,797.04/85,628.58
  6. Step 6: Final answer
    x = 68,692.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.