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Finding the Fourth Proportional to 84,704.26, 127,035.84 and 28,529.86

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Solution

The fourth proportional to 84,704.26, 127,035.84 and 28,529.86 is: 42,787.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,704.26 : 127,035.84 = 28,529.86 : x
  2. Step 2: Convert to fraction form
    84,704.26/127,035.84 = 28,529.86/x
  3. Step 3: Cross multiply
    84,704.26x = 127,035.84 × 28,529.86
  4. Step 4: Simplify right side
    84,704.26x = 3,624,314,730.18
  5. Step 5: Solve for x
    x = 3,624,314,730.18/84,704.26
  6. Step 6: Final answer
    x = 42,787.87

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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.