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Finding the Fourth Proportional to 71,735.60, 98,992.86 and 39,904.22

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Solution

The fourth proportional to 71,735.60, 98,992.86 and 39,904.22 is: 55,066.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,735.60 : 98,992.86 = 39,904.22 : x
  2. Step 2: Convert to fraction form
    71,735.60/98,992.86 = 39,904.22/x
  3. Step 3: Cross multiply
    71,735.60x = 98,992.86 × 39,904.22
  4. Step 4: Simplify right side
    71,735.60x = 3,950,232,863.87
  5. Step 5: Solve for x
    x = 3,950,232,863.87/71,735.60
  6. Step 6: Final answer
    x = 55,066.56

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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.