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Finding the Fourth Proportional to 85,399.26, 117,850.86 and 47,673.52

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Solution

The fourth proportional to 85,399.26, 117,850.86 and 47,673.52 is: 65,789.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,399.26 : 117,850.86 = 47,673.52 : x
  2. Step 2: Convert to fraction form
    85,399.26/117,850.86 = 47,673.52/x
  3. Step 3: Cross multiply
    85,399.26x = 117,850.86 × 47,673.52
  4. Step 4: Simplify right side
    85,399.26x = 5,618,365,331.23
  5. Step 5: Solve for x
    x = 5,618,365,331.23/85,399.26
  6. Step 6: Final answer
    x = 65,789.39

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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.