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Finding the Fourth Proportional to 43,491.36, 65,245.04 and 18,531.36

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Solution

The fourth proportional to 43,491.36, 65,245.04 and 18,531.36 is: 27,800.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,491.36 : 65,245.04 = 18,531.36 : x
  2. Step 2: Convert to fraction form
    43,491.36/65,245.04 = 18,531.36/x
  3. Step 3: Cross multiply
    43,491.36x = 65,245.04 × 18,531.36
  4. Step 4: Simplify right side
    43,491.36x = 1,209,079,324.45
  5. Step 5: Solve for x
    x = 1,209,079,324.45/43,491.36
  6. Step 6: Final answer
    x = 27,800.45

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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.