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Finding the Fourth Proportional to 115,079.12, 172,640.46 and 44,954

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Solution

The fourth proportional to 115,079.12, 172,640.46 and 44,954 is: 67,439.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,079.12 : 172,640.46 = 44,954 : x
  2. Step 2: Convert to fraction form
    115,079.12/172,640.46 = 44,954/x
  3. Step 3: Cross multiply
    115,079.12x = 172,640.46 × 44,954
  4. Step 4: Simplify right side
    115,079.12x = 7,760,879,238.84
  5. Step 5: Solve for x
    x = 7,760,879,238.84/115,079.12
  6. Step 6: Final answer
    x = 67,439.51

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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.