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Finding the Fourth Proportional to 48,179.61, 72,290.09 and 18,618.20

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Solution

The fourth proportional to 48,179.61, 72,290.09 and 18,618.20 is: 27,935.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,179.61 : 72,290.09 = 18,618.20 : x
  2. Step 2: Convert to fraction form
    48,179.61/72,290.09 = 18,618.20/x
  3. Step 3: Cross multiply
    48,179.61x = 72,290.09 × 18,618.20
  4. Step 4: Simplify right side
    48,179.61x = 1,345,911,611.73
  5. Step 5: Solve for x
    x = 1,345,911,611.73/48,179.61
  6. Step 6: Final answer
    x = 27,935.29

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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.