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Finding the Fourth Proportional to 73,906.26, 101,990.62 and 39,914.74

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Solution

The fourth proportional to 73,906.26, 101,990.62 and 39,914.74 is: 55,082.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,906.26 : 101,990.62 = 39,914.74 : x
  2. Step 2: Convert to fraction form
    73,906.26/101,990.62 = 39,914.74/x
  3. Step 3: Cross multiply
    73,906.26x = 101,990.62 × 39,914.74
  4. Step 4: Simplify right side
    73,906.26x = 4,070,929,257.12
  5. Step 5: Solve for x
    x = 4,070,929,257.12/73,906.26
  6. Step 6: Final answer
    x = 55,082.34

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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.