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Finding the Fourth Proportional to 70,674.20, 106,059.90 and 29,121.20

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Solution

The fourth proportional to 70,674.20, 106,059.90 and 29,121.20 is: 43,701.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,674.20 : 106,059.90 = 29,121.20 : x
  2. Step 2: Convert to fraction form
    70,674.20/106,059.90 = 29,121.20/x
  3. Step 3: Cross multiply
    70,674.20x = 106,059.90 × 29,121.20
  4. Step 4: Simplify right side
    70,674.20x = 3,088,591,029.58
  5. Step 5: Solve for x
    x = 3,088,591,029.58/70,674.20
  6. Step 6: Final answer
    x = 43,701.82

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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.