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Finding the Fourth Proportional to 71,179.88, 98,219.70 and 39,344.45

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Solution

The fourth proportional to 71,179.88, 98,219.70 and 39,344.45 is: 54,290.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,179.88 : 98,219.70 = 39,344.45 : x
  2. Step 2: Convert to fraction form
    71,179.88/98,219.70 = 39,344.45/x
  3. Step 3: Cross multiply
    71,179.88x = 98,219.70 × 39,344.45
  4. Step 4: Simplify right side
    71,179.88x = 3,864,399,584.57
  5. Step 5: Solve for x
    x = 3,864,399,584.57/71,179.88
  6. Step 6: Final answer
    x = 54,290.62

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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.