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Finding the Fourth Proportional to 69,451.90, 104,163.81 and 19,534.30

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Solution

The fourth proportional to 69,451.90, 104,163.81 and 19,534.30 is: 29,297.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,451.90 : 104,163.81 = 19,534.30 : x
  2. Step 2: Convert to fraction form
    69,451.90/104,163.81 = 19,534.30/x
  3. Step 3: Cross multiply
    69,451.90x = 104,163.81 × 19,534.30
  4. Step 4: Simplify right side
    69,451.90x = 2,034,766,780.02
  5. Step 5: Solve for x
    x = 2,034,766,780.02/69,451.90
  6. Step 6: Final answer
    x = 29,297.50

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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.