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Finding the Fourth Proportional to 80,268.78, 110,845.38 and 60,090.63

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Solution

The fourth proportional to 80,268.78, 110,845.38 and 60,090.63 is: 82,980.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,268.78 : 110,845.38 = 60,090.63 : x
  2. Step 2: Convert to fraction form
    80,268.78/110,845.38 = 60,090.63/x
  3. Step 3: Cross multiply
    80,268.78x = 110,845.38 × 60,090.63
  4. Step 4: Simplify right side
    80,268.78x = 6,660,768,716.79
  5. Step 5: Solve for x
    x = 6,660,768,716.79/80,268.78
  6. Step 6: Final answer
    x = 82,980.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.