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Finding the Fourth Proportional to 85,475.70, 117,930.33 and 49,658.85

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Solution

The fourth proportional to 85,475.70, 117,930.33 and 49,658.85 is: 68,514.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,475.70 : 117,930.33 = 49,658.85 : x
  2. Step 2: Convert to fraction form
    85,475.70/117,930.33 = 49,658.85/x
  3. Step 3: Cross multiply
    85,475.70x = 117,930.33 × 49,658.85
  4. Step 4: Simplify right side
    85,475.70x = 5,856,284,567.92
  5. Step 5: Solve for x
    x = 5,856,284,567.92/85,475.70
  6. Step 6: Final answer
    x = 68,514.03

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1.5x scale

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.