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Finding the Fourth Proportional to 71,327.99, 98,431.42 and 39,496.21

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Solution

The fourth proportional to 71,327.99, 98,431.42 and 39,496.21 is: 54,504.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,327.99 : 98,431.42 = 39,496.21 : x
  2. Step 2: Convert to fraction form
    71,327.99/98,431.42 = 39,496.21/x
  3. Step 3: Cross multiply
    71,327.99x = 98,431.42 × 39,496.21
  4. Step 4: Simplify right side
    71,327.99x = 3,887,667,764.15
  5. Step 5: Solve for x
    x = 3,887,667,764.15/71,327.99
  6. Step 6: Final answer
    x = 54,504.10

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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.