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Finding the Fourth Proportional to 69,818.80, 104,728.20 and 51,229.30

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Solution

The fourth proportional to 69,818.80, 104,728.20 and 51,229.30 is: 76,843.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,818.80 : 104,728.20 = 51,229.30 : x
  2. Step 2: Convert to fraction form
    69,818.80/104,728.20 = 51,229.30/x
  3. Step 3: Cross multiply
    69,818.80x = 104,728.20 × 51,229.30
  4. Step 4: Simplify right side
    69,818.80x = 5,365,152,376.26
  5. Step 5: Solve for x
    x = 5,365,152,376.26/69,818.80
  6. Step 6: Final answer
    x = 76,843.95

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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.