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Finding the Fourth Proportional to 85,296.78, 127,791.95 and 50,217.30

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Solution

The fourth proportional to 85,296.78, 127,791.95 and 50,217.30 is: 75,235.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,296.78 : 127,791.95 = 50,217.30 : x
  2. Step 2: Convert to fraction form
    85,296.78/127,791.95 = 50,217.30/x
  3. Step 3: Cross multiply
    85,296.78x = 127,791.95 × 50,217.30
  4. Step 4: Simplify right side
    85,296.78x = 6,417,366,439.65
  5. Step 5: Solve for x
    x = 6,417,366,439.65/85,296.78
  6. Step 6: Final answer
    x = 75,235.74

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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.