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Finding the Fourth Proportional to 84,874.20, 127,315.32 and 27,951.72

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Solution

The fourth proportional to 84,874.20, 127,315.32 and 27,951.72 is: 41,928.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,874.20 : 127,315.32 = 27,951.72 : x
  2. Step 2: Convert to fraction form
    84,874.20/127,315.32 = 27,951.72/x
  3. Step 3: Cross multiply
    84,874.20x = 127,315.32 × 27,951.72
  4. Step 4: Simplify right side
    84,874.20x = 3,558,682,176.35
  5. Step 5: Solve for x
    x = 3,558,682,176.35/84,874.20
  6. Step 6: Final answer
    x = 41,928.90

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1.5x scale

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.