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Finding the Fourth Proportional to 48,936.80, 73,405.20 and 19,339.40

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Solution

The fourth proportional to 48,936.80, 73,405.20 and 19,339.40 is: 29,009.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,936.80 : 73,405.20 = 19,339.40 : x
  2. Step 2: Convert to fraction form
    48,936.80/73,405.20 = 19,339.40/x
  3. Step 3: Cross multiply
    48,936.80x = 73,405.20 × 19,339.40
  4. Step 4: Simplify right side
    48,936.80x = 1,419,612,524.88
  5. Step 5: Solve for x
    x = 1,419,612,524.88/48,936.80
  6. Step 6: Final answer
    x = 29,009.10

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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.