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Finding the Fourth Proportional to 43,940.40, 65,903.40 and 12,352.60

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Solution

The fourth proportional to 43,940.40, 65,903.40 and 12,352.60 is: 18,526.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,940.40 : 65,903.40 = 12,352.60 : x
  2. Step 2: Convert to fraction form
    43,940.40/65,903.40 = 12,352.60/x
  3. Step 3: Cross multiply
    43,940.40x = 65,903.40 × 12,352.60
  4. Step 4: Simplify right side
    43,940.40x = 814,078,338.84
  5. Step 5: Solve for x
    x = 814,078,338.84/43,940.40
  6. Step 6: Final answer
    x = 18,526.88

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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.