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Finding the Fourth Proportional to 48,469.14, 72,705.15 and 18,893.70

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Solution

The fourth proportional to 48,469.14, 72,705.15 and 18,893.70 is: 28,341.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,469.14 : 72,705.15 = 18,893.70 : x
  2. Step 2: Convert to fraction form
    48,469.14/72,705.15 = 18,893.70/x
  3. Step 3: Cross multiply
    48,469.14x = 72,705.15 × 18,893.70
  4. Step 4: Simplify right side
    48,469.14x = 1,373,669,292.56
  5. Step 5: Solve for x
    x = 1,373,669,292.56/48,469.14
  6. Step 6: Final answer
    x = 28,341.11

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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.