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Finding the Fourth Proportional to 71,492.63, 107,236.25 and 21,571.39

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Solution

The fourth proportional to 71,492.63, 107,236.25 and 21,571.39 is: 32,356.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,492.63 : 107,236.25 = 21,571.39 : x
  2. Step 2: Convert to fraction form
    71,492.63/107,236.25 = 21,571.39/x
  3. Step 3: Cross multiply
    71,492.63x = 107,236.25 × 21,571.39
  4. Step 4: Simplify right side
    71,492.63x = 2,313,235,017.30
  5. Step 5: Solve for x
    x = 2,313,235,017.30/71,492.63
  6. Step 6: Final answer
    x = 32,356.27

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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.