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Finding the Fourth Proportional to 69,280.20, 103,660.80 and 49,335.80

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Solution

The fourth proportional to 69,280.20, 103,660.80 and 49,335.80 is: 73,818.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,280.20 : 103,660.80 = 49,335.80 : x
  2. Step 2: Convert to fraction form
    69,280.20/103,660.80 = 49,335.80/x
  3. Step 3: Cross multiply
    69,280.20x = 103,660.80 × 49,335.80
  4. Step 4: Simplify right side
    69,280.20x = 5,114,188,496.64
  5. Step 5: Solve for x
    x = 5,114,188,496.64/69,280.20
  6. Step 6: Final answer
    x = 73,818.90

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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.