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Finding the Fourth Proportional to 72,040.35, 108,052.02 and 19,453.94

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Solution

The fourth proportional to 72,040.35, 108,052.02 and 19,453.94 is: 29,178.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,040.35 : 108,052.02 = 19,453.94 : x
  2. Step 2: Convert to fraction form
    72,040.35/108,052.02 = 19,453.94/x
  3. Step 3: Cross multiply
    72,040.35x = 108,052.02 × 19,453.94
  4. Step 4: Simplify right side
    72,040.35x = 2,102,036,973.70
  5. Step 5: Solve for x
    x = 2,102,036,973.70/72,040.35
  6. Step 6: Final answer
    x = 29,178.61

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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.