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Finding the Fourth Proportional to 84,838.80, 127,310.20 and 34,942.80

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Solution

The fourth proportional to 84,838.80, 127,310.20 and 34,942.80 is: 52,435.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,838.80 : 127,310.20 = 34,942.80 : x
  2. Step 2: Convert to fraction form
    84,838.80/127,310.20 = 34,942.80/x
  3. Step 3: Cross multiply
    84,838.80x = 127,310.20 × 34,942.80
  4. Step 4: Simplify right side
    84,838.80x = 4,448,574,856.56
  5. Step 5: Solve for x
    x = 4,448,574,856.56/84,838.80
  6. Step 6: Final answer
    x = 52,435.62

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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.