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Finding the Fourth Proportional to 80,483.44, 120,684.66 and 27,878.80

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Solution

The fourth proportional to 80,483.44, 120,684.66 and 27,878.80 is: 41,804.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,483.44 : 120,684.66 = 27,878.80 : x
  2. Step 2: Convert to fraction form
    80,483.44/120,684.66 = 27,878.80/x
  3. Step 3: Cross multiply
    80,483.44x = 120,684.66 × 27,878.80
  4. Step 4: Simplify right side
    80,483.44x = 3,364,543,499.21
  5. Step 5: Solve for x
    x = 3,364,543,499.21/80,483.44
  6. Step 6: Final answer
    x = 41,804.17

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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.