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Finding the Fourth Proportional to 85,496.96, 117,991.91 and 47,255.69

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Solution

The fourth proportional to 85,496.96, 117,991.91 and 47,255.69 is: 65,216.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,496.96 : 117,991.91 = 47,255.69 : x
  2. Step 2: Convert to fraction form
    85,496.96/117,991.91 = 47,255.69/x
  3. Step 3: Cross multiply
    85,496.96x = 117,991.91 × 47,255.69
  4. Step 4: Simplify right side
    85,496.96x = 5,575,789,121.47
  5. Step 5: Solve for x
    x = 5,575,789,121.47/85,496.96
  6. Step 6: Final answer
    x = 65,216.23

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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.