Home / 91,280.44-136,933.62-28,105.81

Finding the Fourth Proportional to 91,280.44, 136,933.62 and 28,105.81

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Solution

The fourth proportional to 91,280.44, 136,933.62 and 28,105.81 is: 42,162.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,280.44 : 136,933.62 = 28,105.81 : x
  2. Step 2: Convert to fraction form
    91,280.44/136,933.62 = 28,105.81/x
  3. Step 3: Cross multiply
    91,280.44x = 136,933.62 × 28,105.81
  4. Step 4: Simplify right side
    91,280.44x = 3,848,630,786.95
  5. Step 5: Solve for x
    x = 3,848,630,786.95/91,280.44
  6. Step 6: Final answer
    x = 42,162.71

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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.