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Finding the Fourth Proportional to 71,593, 107,368.84 and 21,661.36

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Solution

The fourth proportional to 71,593, 107,368.84 and 21,661.36 is: 32,485.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,593 : 107,368.84 = 21,661.36 : x
  2. Step 2: Convert to fraction form
    71,593/107,368.84 = 21,661.36/x
  3. Step 3: Cross multiply
    71,593x = 107,368.84 × 21,661.36
  4. Step 4: Simplify right side
    71,593x = 2,325,755,096.02
  5. Step 5: Solve for x
    x = 2,325,755,096.02/71,593
  6. Step 6: Final answer
    x = 32,485.79

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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.