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Finding the Fourth Proportional to 67,154.10, 100,767.60 and 27,715.20

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Solution

The fourth proportional to 67,154.10, 100,767.60 and 27,715.20 is: 41,587.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,154.10 : 100,767.60 = 27,715.20 : x
  2. Step 2: Convert to fraction form
    67,154.10/100,767.60 = 27,715.20/x
  3. Step 3: Cross multiply
    67,154.10x = 100,767.60 × 27,715.20
  4. Step 4: Simplify right side
    67,154.10x = 2,792,794,187.52
  5. Step 5: Solve for x
    x = 2,792,794,187.52/67,154.10
  6. Step 6: Final answer
    x = 41,587.84

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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.