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Finding the Fourth Proportional to 89,380.89, 134,127.81 and 49,963.86

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Solution

The fourth proportional to 89,380.89, 134,127.81 and 49,963.86 is: 74,977.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,380.89 : 134,127.81 = 49,963.86 : x
  2. Step 2: Convert to fraction form
    89,380.89/134,127.81 = 49,963.86/x
  3. Step 3: Cross multiply
    89,380.89x = 134,127.81 × 49,963.86
  4. Step 4: Simplify right side
    89,380.89x = 6,701,543,120.95
  5. Step 5: Solve for x
    x = 6,701,543,120.95/89,380.89
  6. Step 6: Final answer
    x = 74,977.36

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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.