Home / 80,421.69-110,909.27-50,209.77

Finding the Fourth Proportional to 80,421.69, 110,909.27 and 50,209.77

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Solution

The fourth proportional to 80,421.69, 110,909.27 and 50,209.77 is: 69,244.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,421.69 : 110,909.27 = 50,209.77 : x
  2. Step 2: Convert to fraction form
    80,421.69/110,909.27 = 50,209.77/x
  3. Step 3: Cross multiply
    80,421.69x = 110,909.27 × 50,209.77
  4. Step 4: Simplify right side
    80,421.69x = 5,568,728,686.52
  5. Step 5: Solve for x
    x = 5,568,728,686.52/80,421.69
  6. Step 6: Final answer
    x = 69,244.11

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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.