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Finding the Fourth Proportional to 43,203.84, 64,806.21 and 12,039.09

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Solution

The fourth proportional to 43,203.84, 64,806.21 and 12,039.09 is: 18,058.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,203.84 : 64,806.21 = 12,039.09 : x
  2. Step 2: Convert to fraction form
    43,203.84/64,806.21 = 12,039.09/x
  3. Step 3: Cross multiply
    43,203.84x = 64,806.21 × 12,039.09
  4. Step 4: Simplify right side
    43,203.84x = 780,207,794.75
  5. Step 5: Solve for x
    x = 780,207,794.75/43,203.84
  6. Step 6: Final answer
    x = 18,058.76

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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.