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Finding the Fourth Proportional to 43,356.50, 65,033.30 and 18,380.48

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Solution

The fourth proportional to 43,356.50, 65,033.30 and 18,380.48 is: 27,570.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,356.50 : 65,033.30 = 18,380.48 : x
  2. Step 2: Convert to fraction form
    43,356.50/65,033.30 = 18,380.48/x
  3. Step 3: Cross multiply
    43,356.50x = 65,033.30 × 18,380.48
  4. Step 4: Simplify right side
    43,356.50x = 1,195,343,269.98
  5. Step 5: Solve for x
    x = 1,195,343,269.98/43,356.50
  6. Step 6: Final answer
    x = 27,570.11

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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.