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Finding the Fourth Proportional to 69,280.80, 103,921.20 and 60,727.20

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Solution

The fourth proportional to 69,280.80, 103,921.20 and 60,727.20 is: 91,090.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,280.80 : 103,921.20 = 60,727.20 : x
  2. Step 2: Convert to fraction form
    69,280.80/103,921.20 = 60,727.20/x
  3. Step 3: Cross multiply
    69,280.80x = 103,921.20 × 60,727.20
  4. Step 4: Simplify right side
    69,280.80x = 6,310,843,496.64
  5. Step 5: Solve for x
    x = 6,310,843,496.64/69,280.80
  6. Step 6: Final answer
    x = 91,090.80

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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.