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Finding the Fourth Proportional to 69,751.55, 104,611.57 and 19,830.56

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Solution

The fourth proportional to 69,751.55, 104,611.57 and 19,830.56 is: 29,741.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,751.55 : 104,611.57 = 19,830.56 : x
  2. Step 2: Convert to fraction form
    69,751.55/104,611.57 = 19,830.56/x
  3. Step 3: Cross multiply
    69,751.55x = 104,611.57 × 19,830.56
  4. Step 4: Simplify right side
    69,751.55x = 2,074,505,442.94
  5. Step 5: Solve for x
    x = 2,074,505,442.94/69,751.55
  6. Step 6: Final answer
    x = 29,741.35

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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.