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Finding the Fourth Proportional to 71,959.26, 107,938.89 and 19,367.38

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Solution

The fourth proportional to 71,959.26, 107,938.89 and 19,367.38 is: 29,051.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,959.26 : 107,938.89 = 19,367.38 : x
  2. Step 2: Convert to fraction form
    71,959.26/107,938.89 = 19,367.38/x
  3. Step 3: Cross multiply
    71,959.26x = 107,938.89 × 19,367.38
  4. Step 4: Simplify right side
    71,959.26x = 2,090,492,862.88
  5. Step 5: Solve for x
    x = 2,090,492,862.88/71,959.26
  6. Step 6: Final answer
    x = 29,051.06

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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.