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Finding the Fourth Proportional to 70,879, 106,318.50 and 29,327.08

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Solution

The fourth proportional to 70,879, 106,318.50 and 29,327.08 is: 43,990.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,879 : 106,318.50 = 29,327.08 : x
  2. Step 2: Convert to fraction form
    70,879/106,318.50 = 29,327.08/x
  3. Step 3: Cross multiply
    70,879x = 106,318.50 × 29,327.08
  4. Step 4: Simplify right side
    70,879x = 3,118,011,154.98
  5. Step 5: Solve for x
    x = 3,118,011,154.98/70,879
  6. Step 6: Final answer
    x = 43,990.62

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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.