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Finding the Fourth Proportional to 43,803.70, 65,629.95 and 20,382.10

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Solution

The fourth proportional to 43,803.70, 65,629.95 and 20,382.10 is: 30,537.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,803.70 : 65,629.95 = 20,382.10 : x
  2. Step 2: Convert to fraction form
    43,803.70/65,629.95 = 20,382.10/x
  3. Step 3: Cross multiply
    43,803.70x = 65,629.95 × 20,382.10
  4. Step 4: Simplify right side
    43,803.70x = 1,337,676,203.90
  5. Step 5: Solve for x
    x = 1,337,676,203.90/43,803.70
  6. Step 6: Final answer
    x = 30,537.97

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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.