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Finding the Fourth Proportional to 69,778.88, 104,682.15 and 19,860.94

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Solution

The fourth proportional to 69,778.88, 104,682.15 and 19,860.94 is: 29,795.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,778.88 : 104,682.15 = 19,860.94 : x
  2. Step 2: Convert to fraction form
    69,778.88/104,682.15 = 19,860.94/x
  3. Step 3: Cross multiply
    69,778.88x = 104,682.15 × 19,860.94
  4. Step 4: Simplify right side
    69,778.88x = 2,079,085,900.22
  5. Step 5: Solve for x
    x = 2,079,085,900.22/69,778.88
  6. Step 6: Final answer
    x = 29,795.35

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1.5x scale

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.