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Finding the Fourth Proportional to 71,961.41, 107,942.02 and 19,370.95

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Solution

The fourth proportional to 71,961.41, 107,942.02 and 19,370.95 is: 29,056.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,961.41 : 107,942.02 = 19,370.95 : x
  2. Step 2: Convert to fraction form
    71,961.41/107,942.02 = 19,370.95/x
  3. Step 3: Cross multiply
    71,961.41x = 107,942.02 × 19,370.95
  4. Step 4: Simplify right side
    71,961.41x = 2,090,939,154.04
  5. Step 5: Solve for x
    x = 2,090,939,154.04/71,961.41
  6. Step 6: Final answer
    x = 29,056.39

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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.