Home / 85,108.39-117,464.90-49,318.13

Finding the Fourth Proportional to 85,108.39, 117,464.90 and 49,318.13

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Solution

The fourth proportional to 85,108.39, 117,464.90 and 49,318.13 is: 68,067.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,108.39 : 117,464.90 = 49,318.13 : x
  2. Step 2: Convert to fraction form
    85,108.39/117,464.90 = 49,318.13/x
  3. Step 3: Cross multiply
    85,108.39x = 117,464.90 × 49,318.13
  4. Step 4: Simplify right side
    85,108.39x = 5,793,149,255.71
  5. Step 5: Solve for x
    x = 5,793,149,255.71/85,108.39
  6. Step 6: Final answer
    x = 68,067.90

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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.