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Finding the Fourth Proportional to 71,450.62, 107,175.98 and 18,146.59

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Solution

The fourth proportional to 71,450.62, 107,175.98 and 18,146.59 is: 27,219.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,450.62 : 107,175.98 = 18,146.59 : x
  2. Step 2: Convert to fraction form
    71,450.62/107,175.98 = 18,146.59/x
  3. Step 3: Cross multiply
    71,450.62x = 107,175.98 × 18,146.59
  4. Step 4: Simplify right side
    71,450.62x = 1,944,878,566.91
  5. Step 5: Solve for x
    x = 1,944,878,566.91/71,450.62
  6. Step 6: Final answer
    x = 27,219.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.