Home / 85,100.72-117,421.19-49,288.59

Finding the Fourth Proportional to 85,100.72, 117,421.19 and 49,288.59

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Solution

The fourth proportional to 85,100.72, 117,421.19 and 49,288.59 is: 68,007.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,100.72 : 117,421.19 = 49,288.59 : x
  2. Step 2: Convert to fraction form
    85,100.72/117,421.19 = 49,288.59/x
  3. Step 3: Cross multiply
    85,100.72x = 117,421.19 × 49,288.59
  4. Step 4: Simplify right side
    85,100.72x = 5,787,524,644.78
  5. Step 5: Solve for x
    x = 5,787,524,644.78/85,100.72
  6. Step 6: Final answer
    x = 68,007.94

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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.