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Finding the Fourth Proportional to 87,318.84, 120,510.24 and 49,078.44

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Solution

The fourth proportional to 87,318.84, 120,510.24 and 49,078.44 is: 67,734.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,318.84 : 120,510.24 = 49,078.44 : x
  2. Step 2: Convert to fraction form
    87,318.84/120,510.24 = 49,078.44/x
  3. Step 3: Cross multiply
    87,318.84x = 120,510.24 × 49,078.44
  4. Step 4: Simplify right side
    87,318.84x = 5,914,454,583.23
  5. Step 5: Solve for x
    x = 5,914,454,583.23/87,318.84
  6. Step 6: Final answer
    x = 67,734.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.