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Finding the Fourth Proportional to 48,657.43, 72,979.86 and 15,380.85

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Solution

The fourth proportional to 48,657.43, 72,979.86 and 15,380.85 is: 23,069.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,657.43 : 72,979.86 = 15,380.85 : x
  2. Step 2: Convert to fraction form
    48,657.43/72,979.86 = 15,380.85/x
  3. Step 3: Cross multiply
    48,657.43x = 72,979.86 × 15,380.85
  4. Step 4: Simplify right side
    48,657.43x = 1,122,492,611.03
  5. Step 5: Solve for x
    x = 1,122,492,611.03/48,657.43
  6. Step 6: Final answer
    x = 23,069.29

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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.