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Finding the Fourth Proportional to 70,624.40, 105,936.53 and 18,033.89

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Solution

The fourth proportional to 70,624.40, 105,936.53 and 18,033.89 is: 27,050.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,624.40 : 105,936.53 = 18,033.89 : x
  2. Step 2: Convert to fraction form
    70,624.40/105,936.53 = 18,033.89/x
  3. Step 3: Cross multiply
    70,624.40x = 105,936.53 × 18,033.89
  4. Step 4: Simplify right side
    70,624.40x = 1,910,447,109.15
  5. Step 5: Solve for x
    x = 1,910,447,109.15/70,624.40
  6. Step 6: Final answer
    x = 27,050.81

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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.