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Finding the Fourth Proportional to 69,527.50, 104,294.49 and 20,279.50

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Solution

The fourth proportional to 69,527.50, 104,294.49 and 20,279.50 is: 30,420.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,527.50 : 104,294.49 = 20,279.50 : x
  2. Step 2: Convert to fraction form
    69,527.50/104,294.49 = 20,279.50/x
  3. Step 3: Cross multiply
    69,527.50x = 104,294.49 × 20,279.50
  4. Step 4: Simplify right side
    69,527.50x = 2,115,040,109.96
  5. Step 5: Solve for x
    x = 2,115,040,109.96/69,527.50
  6. Step 6: Final answer
    x = 30,420.20

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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.