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Finding the Fourth Proportional to 48,550, 72,781.66 and 18,960.92

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Solution

The fourth proportional to 48,550, 72,781.66 and 18,960.92 is: 28,424.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,550 : 72,781.66 = 18,960.92 : x
  2. Step 2: Convert to fraction form
    48,550/72,781.66 = 18,960.92/x
  3. Step 3: Cross multiply
    48,550x = 72,781.66 × 18,960.92
  4. Step 4: Simplify right side
    48,550x = 1,380,007,232.73
  5. Step 5: Solve for x
    x = 1,380,007,232.73/48,550
  6. Step 6: Final answer
    x = 28,424.45

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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.