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Finding the Fourth Proportional to 43,503, 65,251.04 and 13,912.88

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Solution

The fourth proportional to 43,503, 65,251.04 and 13,912.88 is: 20,868.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,503 : 65,251.04 = 13,912.88 : x
  2. Step 2: Convert to fraction form
    43,503/65,251.04 = 13,912.88/x
  3. Step 3: Cross multiply
    43,503x = 65,251.04 × 13,912.88
  4. Step 4: Simplify right side
    43,503x = 907,829,889.40
  5. Step 5: Solve for x
    x = 907,829,889.40/43,503
  6. Step 6: Final answer
    x = 20,868.21

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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.