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Finding the Fourth Proportional to 80,546.81, 120,820.55 and 27,239.07

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Solution

The fourth proportional to 80,546.81, 120,820.55 and 27,239.07 is: 40,858.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,546.81 : 120,820.55 = 27,239.07 : x
  2. Step 2: Convert to fraction form
    80,546.81/120,820.55 = 27,239.07/x
  3. Step 3: Cross multiply
    80,546.81x = 120,820.55 × 27,239.07
  4. Step 4: Simplify right side
    80,546.81x = 3,291,038,916.21
  5. Step 5: Solve for x
    x = 3,291,038,916.21/80,546.81
  6. Step 6: Final answer
    x = 40,858.71

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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.