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Finding the Fourth Proportional to 69,783.82, 96,299.61 and 39,571.90

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Solution

The fourth proportional to 69,783.82, 96,299.61 and 39,571.90 is: 54,608.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,783.82 : 96,299.61 = 39,571.90 : x
  2. Step 2: Convert to fraction form
    69,783.82/96,299.61 = 39,571.90/x
  3. Step 3: Cross multiply
    69,783.82x = 96,299.61 × 39,571.90
  4. Step 4: Simplify right side
    69,783.82x = 3,810,758,536.96
  5. Step 5: Solve for x
    x = 3,810,758,536.96/69,783.82
  6. Step 6: Final answer
    x = 54,608.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.