Home / 80,906.12-121,263.84-36,480.86

Finding the Fourth Proportional to 80,906.12, 121,263.84 and 36,480.86

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Solution

The fourth proportional to 80,906.12, 121,263.84 and 36,480.86 is: 54,678.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,906.12 : 121,263.84 = 36,480.86 : x
  2. Step 2: Convert to fraction form
    80,906.12/121,263.84 = 36,480.86/x
  3. Step 3: Cross multiply
    80,906.12x = 121,263.84 × 36,480.86
  4. Step 4: Simplify right side
    80,906.12x = 4,423,809,170.10
  5. Step 5: Solve for x
    x = 4,423,809,170.10/80,906.12
  6. Step 6: Final answer
    x = 54,678.30

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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.