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Finding the Fourth Proportional to 71,717.44, 107,579.80 and 19,127.36

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Solution

The fourth proportional to 71,717.44, 107,579.80 and 19,127.36 is: 28,692.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,717.44 : 107,579.80 = 19,127.36 : x
  2. Step 2: Convert to fraction form
    71,717.44/107,579.80 = 19,127.36/x
  3. Step 3: Cross multiply
    71,717.44x = 107,579.80 × 19,127.36
  4. Step 4: Simplify right side
    71,717.44x = 2,057,717,563.33
  5. Step 5: Solve for x
    x = 2,057,717,563.33/71,717.44
  6. Step 6: Final answer
    x = 28,692.01

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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.