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Finding the Fourth Proportional to 71,011.12, 97,993.92 and 39,179.92

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Solution

The fourth proportional to 71,011.12, 97,993.92 and 39,179.92 is: 54,067.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,011.12 : 97,993.92 = 39,179.92 : x
  2. Step 2: Convert to fraction form
    71,011.12/97,993.92 = 39,179.92/x
  3. Step 3: Cross multiply
    71,011.12x = 97,993.92 × 39,179.92
  4. Step 4: Simplify right side
    71,011.12x = 3,839,393,946.09
  5. Step 5: Solve for x
    x = 3,839,393,946.09/71,011.12
  6. Step 6: Final answer
    x = 54,067.50

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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.