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Finding the Fourth Proportional to 71,493.80, 98,661.49 and 39,662.73

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Solution

The fourth proportional to 71,493.80, 98,661.49 and 39,662.73 is: 54,734.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,493.80 : 98,661.49 = 39,662.73 : x
  2. Step 2: Convert to fraction form
    71,493.80/98,661.49 = 39,662.73/x
  3. Step 3: Cross multiply
    71,493.80x = 98,661.49 × 39,662.73
  4. Step 4: Simplify right side
    71,493.80x = 3,913,183,940.11
  5. Step 5: Solve for x
    x = 3,913,183,940.11/71,493.80
  6. Step 6: Final answer
    x = 54,734.60

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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.