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Finding the Fourth Proportional to 104,640.28, 156,985.02 and 34,519.60

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Solution

The fourth proportional to 104,640.28, 156,985.02 and 34,519.60 is: 51,787.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,640.28 : 156,985.02 = 34,519.60 : x
  2. Step 2: Convert to fraction form
    104,640.28/156,985.02 = 34,519.60/x
  3. Step 3: Cross multiply
    104,640.28x = 156,985.02 × 34,519.60
  4. Step 4: Simplify right side
    104,640.28x = 5,419,060,096.39
  5. Step 5: Solve for x
    x = 5,419,060,096.39/104,640.28
  6. Step 6: Final answer
    x = 51,787.52

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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.