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Finding the Fourth Proportional to 60,168.28, 90,252.60 and 20,724.88

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Solution

The fourth proportional to 60,168.28, 90,252.60 and 20,724.88 is: 31,087.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,168.28 : 90,252.60 = 20,724.88 : x
  2. Step 2: Convert to fraction form
    60,168.28/90,252.60 = 20,724.88/x
  3. Step 3: Cross multiply
    60,168.28x = 90,252.60 × 20,724.88
  4. Step 4: Simplify right side
    60,168.28x = 1,870,474,304.69
  5. Step 5: Solve for x
    x = 1,870,474,304.69/60,168.28
  6. Step 6: Final answer
    x = 31,087.38

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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.