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Finding the Fourth Proportional to 71,996.43, 107,987.35 and 19,411.23

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Solution

The fourth proportional to 71,996.43, 107,987.35 and 19,411.23 is: 29,114.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,996.43 : 107,987.35 = 19,411.23 : x
  2. Step 2: Convert to fraction form
    71,996.43/107,987.35 = 19,411.23/x
  3. Step 3: Cross multiply
    71,996.43x = 107,987.35 × 19,411.23
  4. Step 4: Simplify right side
    71,996.43x = 2,096,167,287.94
  5. Step 5: Solve for x
    x = 2,096,167,287.94/71,996.43
  6. Step 6: Final answer
    x = 29,114.88

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1.5x scale

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.