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Finding the Fourth Proportional to 84,221.01, 116,218.01 and 47,912.79

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Solution

The fourth proportional to 84,221.01, 116,218.01 and 47,912.79 is: 66,115.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,221.01 : 116,218.01 = 47,912.79 : x
  2. Step 2: Convert to fraction form
    84,221.01/116,218.01 = 47,912.79/x
  3. Step 3: Cross multiply
    84,221.01x = 116,218.01 × 47,912.79
  4. Step 4: Simplify right side
    84,221.01x = 5,568,329,662.95
  5. Step 5: Solve for x
    x = 5,568,329,662.95/84,221.01
  6. Step 6: Final answer
    x = 66,115.68

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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.