Home / 80,556.20-120,719.10-55,903.40

Finding the Fourth Proportional to 80,556.20, 120,719.10 and 55,903.40

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Solution

The fourth proportional to 80,556.20, 120,719.10 and 55,903.40 is: 83,775.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,556.20 : 120,719.10 = 55,903.40 : x
  2. Step 2: Convert to fraction form
    80,556.20/120,719.10 = 55,903.40/x
  3. Step 3: Cross multiply
    80,556.20x = 120,719.10 × 55,903.40
  4. Step 4: Simplify right side
    80,556.20x = 6,748,608,134.94
  5. Step 5: Solve for x
    x = 6,748,608,134.94/80,556.20
  6. Step 6: Final answer
    x = 83,775.15

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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.