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Finding the Fourth Proportional to 145,744.38, 218,624.39 and 45,912.39

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Solution

The fourth proportional to 145,744.38, 218,624.39 and 45,912.39 is: 68,871.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,744.38 : 218,624.39 = 45,912.39 : x
  2. Step 2: Convert to fraction form
    145,744.38/218,624.39 = 45,912.39/x
  3. Step 3: Cross multiply
    145,744.38x = 218,624.39 × 45,912.39
  4. Step 4: Simplify right side
    145,744.38x = 10,037,567,379.96
  5. Step 5: Solve for x
    x = 10,037,567,379.96/145,744.38
  6. Step 6: Final answer
    x = 68,871.04

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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.