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Finding the Fourth Proportional to 80,365.52, 120,556.56 and 27,768.20

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Solution

The fourth proportional to 80,365.52, 120,556.56 and 27,768.20 is: 41,655.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,365.52 : 120,556.56 = 27,768.20 : x
  2. Step 2: Convert to fraction form
    80,365.52/120,556.56 = 27,768.20/x
  3. Step 3: Cross multiply
    80,365.52x = 120,556.56 × 27,768.20
  4. Step 4: Simplify right side
    80,365.52x = 3,347,638,669.39
  5. Step 5: Solve for x
    x = 3,347,638,669.39/80,365.52
  6. Step 6: Final answer
    x = 41,655.16

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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.