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Finding the Fourth Proportional to 71,679.74, 107,516.43 and 19,089.27

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Solution

The fourth proportional to 71,679.74, 107,516.43 and 19,089.27 is: 28,633.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,679.74 : 107,516.43 = 19,089.27 : x
  2. Step 2: Convert to fraction form
    71,679.74/107,516.43 = 19,089.27/x
  3. Step 3: Cross multiply
    71,679.74x = 107,516.43 × 19,089.27
  4. Step 4: Simplify right side
    71,679.74x = 2,052,410,161.71
  5. Step 5: Solve for x
    x = 2,052,410,161.71/71,679.74
  6. Step 6: Final answer
    x = 28,633.06

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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.