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Finding the Fourth Proportional to 71,493.42, 98,662.95 and 39,229.50

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Solution

The fourth proportional to 71,493.42, 98,662.95 and 39,229.50 is: 54,137.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,493.42 : 98,662.95 = 39,229.50 : x
  2. Step 2: Convert to fraction form
    71,493.42/98,662.95 = 39,229.50/x
  3. Step 3: Cross multiply
    71,493.42x = 98,662.95 × 39,229.50
  4. Step 4: Simplify right side
    71,493.42x = 3,870,498,197.03
  5. Step 5: Solve for x
    x = 3,870,498,197.03/71,493.42
  6. Step 6: Final answer
    x = 54,137.82

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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.