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Finding the Fourth Proportional to 100,485.54, 150,716.70 and 53,081.64

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Solution

The fourth proportional to 100,485.54, 150,716.70 and 53,081.64 is: 79,616.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,485.54 : 150,716.70 = 53,081.64 : x
  2. Step 2: Convert to fraction form
    100,485.54/150,716.70 = 53,081.64/x
  3. Step 3: Cross multiply
    100,485.54x = 150,716.70 × 53,081.64
  4. Step 4: Simplify right side
    100,485.54x = 8,000,289,611.39
  5. Step 5: Solve for x
    x = 8,000,289,611.39/100,485.54
  6. Step 6: Final answer
    x = 79,616.33

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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.