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Finding the Fourth Proportional to 71,704.58, 107,562.56 and 21,789.03

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Solution

The fourth proportional to 71,704.58, 107,562.56 and 21,789.03 is: 32,685.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,704.58 : 107,562.56 = 21,789.03 : x
  2. Step 2: Convert to fraction form
    71,704.58/107,562.56 = 21,789.03/x
  3. Step 3: Cross multiply
    71,704.58x = 107,562.56 × 21,789.03
  4. Step 4: Simplify right side
    71,704.58x = 2,343,683,737.77
  5. Step 5: Solve for x
    x = 2,343,683,737.77/71,704.58
  6. Step 6: Final answer
    x = 32,685.27

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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.