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Finding the Fourth Proportional to 43,212.71, 64,819.07 and 13,633.54

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Solution

The fourth proportional to 43,212.71, 64,819.07 and 13,633.54 is: 20,450.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,212.71 : 64,819.07 = 13,633.54 : x
  2. Step 2: Convert to fraction form
    43,212.71/64,819.07 = 13,633.54/x
  3. Step 3: Cross multiply
    43,212.71x = 64,819.07 × 13,633.54
  4. Step 4: Simplify right side
    43,212.71x = 883,713,383.61
  5. Step 5: Solve for x
    x = 883,713,383.61/43,212.71
  6. Step 6: Final answer
    x = 20,450.31

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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.