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Finding the Fourth Proportional to 71,967.51, 107,942.85 and 19,372.86

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Solution

The fourth proportional to 71,967.51, 107,942.85 and 19,372.86 is: 29,057.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,967.51 : 107,942.85 = 19,372.86 : x
  2. Step 2: Convert to fraction form
    71,967.51/107,942.85 = 19,372.86/x
  3. Step 3: Cross multiply
    71,967.51x = 107,942.85 × 19,372.86
  4. Step 4: Simplify right side
    71,967.51x = 2,091,161,721.05
  5. Step 5: Solve for x
    x = 2,091,161,721.05/71,967.51
  6. Step 6: Final answer
    x = 29,057.02

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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.