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Finding the Fourth Proportional to 67,390.10, 101,121.60 and 27,951.20

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Solution

The fourth proportional to 67,390.10, 101,121.60 and 27,951.20 is: 41,941.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,390.10 : 101,121.60 = 27,951.20 : x
  2. Step 2: Convert to fraction form
    67,390.10/101,121.60 = 27,951.20/x
  3. Step 3: Cross multiply
    67,390.10x = 101,121.60 × 27,951.20
  4. Step 4: Simplify right side
    67,390.10x = 2,826,470,065.92
  5. Step 5: Solve for x
    x = 2,826,470,065.92/67,390.10
  6. Step 6: Final answer
    x = 41,941.92

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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.