Home / 89,185.25-133,790.94-30,000.78

Finding the Fourth Proportional to 89,185.25, 133,790.94 and 30,000.78

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Solution

The fourth proportional to 89,185.25, 133,790.94 and 30,000.78 is: 45,005.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,185.25 : 133,790.94 = 30,000.78 : x
  2. Step 2: Convert to fraction form
    89,185.25/133,790.94 = 30,000.78/x
  3. Step 3: Cross multiply
    89,185.25x = 133,790.94 × 30,000.78
  4. Step 4: Simplify right side
    89,185.25x = 4,013,832,556.93
  5. Step 5: Solve for x
    x = 4,013,832,556.93/89,185.25
  6. Step 6: Final answer
    x = 45,005.56

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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.