Home / 80,944.52-121,415.99-45,405.77

Finding the Fourth Proportional to 80,944.52, 121,415.99 and 45,405.77

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Solution

The fourth proportional to 80,944.52, 121,415.99 and 45,405.77 is: 68,108.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,944.52 : 121,415.99 = 45,405.77 : x
  2. Step 2: Convert to fraction form
    80,944.52/121,415.99 = 45,405.77/x
  3. Step 3: Cross multiply
    80,944.52x = 121,415.99 × 45,405.77
  4. Step 4: Simplify right side
    80,944.52x = 5,512,985,682.15
  5. Step 5: Solve for x
    x = 5,512,985,682.15/80,944.52
  6. Step 6: Final answer
    x = 68,108.21

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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.