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Finding the Fourth Proportional to 69,559.87, 104,344.15 and 19,643.80

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Solution

The fourth proportional to 69,559.87, 104,344.15 and 19,643.80 is: 29,466.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,559.87 : 104,344.15 = 19,643.80 : x
  2. Step 2: Convert to fraction form
    69,559.87/104,344.15 = 19,643.80/x
  3. Step 3: Cross multiply
    69,559.87x = 104,344.15 × 19,643.80
  4. Step 4: Simplify right side
    69,559.87x = 2,049,715,303.80
  5. Step 5: Solve for x
    x = 2,049,715,303.80/69,559.87
  6. Step 6: Final answer
    x = 29,466.92

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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.