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Finding the Fourth Proportional to 71,620, 107,435.76 and 22,372

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Solution

The fourth proportional to 71,620, 107,435.76 and 22,372 is: 33,559.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,620 : 107,435.76 = 22,372 : x
  2. Step 2: Convert to fraction form
    71,620/107,435.76 = 22,372/x
  3. Step 3: Cross multiply
    71,620x = 107,435.76 × 22,372
  4. Step 4: Simplify right side
    71,620x = 2,403,552,822.72
  5. Step 5: Solve for x
    x = 2,403,552,822.72/71,620
  6. Step 6: Final answer
    x = 33,559.80

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.