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Finding the Fourth Proportional to 69,777.50, 105,131.57 and 63,121.73

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Solution

The fourth proportional to 69,777.50, 105,131.57 and 63,121.73 is: 95,103.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,777.50 : 105,131.57 = 63,121.73 : x
  2. Step 2: Convert to fraction form
    69,777.50/105,131.57 = 63,121.73/x
  3. Step 3: Cross multiply
    69,777.50x = 105,131.57 × 63,121.73
  4. Step 4: Simplify right side
    69,777.50x = 6,636,086,576.02
  5. Step 5: Solve for x
    x = 6,636,086,576.02/69,777.50
  6. Step 6: Final answer
    x = 95,103.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.