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Finding the Fourth Proportional to 67,728.52, 101,776.74 and 36,160.66

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Solution

The fourth proportional to 67,728.52, 101,776.74 and 36,160.66 is: 54,339.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,728.52 : 101,776.74 = 36,160.66 : x
  2. Step 2: Convert to fraction form
    67,728.52/101,776.74 = 36,160.66/x
  3. Step 3: Cross multiply
    67,728.52x = 101,776.74 × 36,160.66
  4. Step 4: Simplify right side
    67,728.52x = 3,680,314,091.05
  5. Step 5: Solve for x
    x = 3,680,314,091.05/67,728.52
  6. Step 6: Final answer
    x = 54,339.21

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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.