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Finding the Fourth Proportional to 70,697.08, 106,046.46 and 18,105.16

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Solution

The fourth proportional to 70,697.08, 106,046.46 and 18,105.16 is: 27,157.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,697.08 : 106,046.46 = 18,105.16 : x
  2. Step 2: Convert to fraction form
    70,697.08/106,046.46 = 18,105.16/x
  3. Step 3: Cross multiply
    70,697.08x = 106,046.46 × 18,105.16
  4. Step 4: Simplify right side
    70,697.08x = 1,919,988,125.73
  5. Step 5: Solve for x
    x = 1,919,988,125.73/70,697.08
  6. Step 6: Final answer
    x = 27,157.96

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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.