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Finding the Fourth Proportional to 80,420.69, 110,907.89 and 50,208.77

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Solution

The fourth proportional to 80,420.69, 110,907.89 and 50,208.77 is: 69,242.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,420.69 : 110,907.89 = 50,208.77 : x
  2. Step 2: Convert to fraction form
    80,420.69/110,907.89 = 50,208.77/x
  3. Step 3: Cross multiply
    80,420.69x = 110,907.89 × 50,208.77
  4. Step 4: Simplify right side
    80,420.69x = 5,568,548,740.20
  5. Step 5: Solve for x
    x = 5,568,548,740.20/80,420.69
  6. Step 6: Final answer
    x = 69,242.74

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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.