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Finding the Fourth Proportional to 71,467.70, 98,620.62 and 39,635.42

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Solution

The fourth proportional to 71,467.70, 98,620.62 and 39,635.42 is: 54,694.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,467.70 : 98,620.62 = 39,635.42 : x
  2. Step 2: Convert to fraction form
    71,467.70/98,620.62 = 39,635.42/x
  3. Step 3: Cross multiply
    71,467.70x = 98,620.62 × 39,635.42
  4. Step 4: Simplify right side
    71,467.70x = 3,908,869,694.36
  5. Step 5: Solve for x
    x = 3,908,869,694.36/71,467.70
  6. Step 6: Final answer
    x = 54,694.21

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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.