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Finding the Fourth Proportional to 70,808, 106,226.04 and 20,888.96

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Solution

The fourth proportional to 70,808, 106,226.04 and 20,888.96 is: 31,337.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,808 : 106,226.04 = 20,888.96 : x
  2. Step 2: Convert to fraction form
    70,808/106,226.04 = 20,888.96/x
  3. Step 3: Cross multiply
    70,808x = 106,226.04 × 20,888.96
  4. Step 4: Simplify right side
    70,808x = 2,218,951,500.52
  5. Step 5: Solve for x
    x = 2,218,951,500.52/70,808
  6. Step 6: Final answer
    x = 31,337.58

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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.