Home / 80,813.03-121,212.25-28,219.32

Finding the Fourth Proportional to 80,813.03, 121,212.25 and 28,219.32

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Solution

The fourth proportional to 80,813.03, 121,212.25 and 28,219.32 is: 42,326.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,813.03 : 121,212.25 = 28,219.32 : x
  2. Step 2: Convert to fraction form
    80,813.03/121,212.25 = 28,219.32/x
  3. Step 3: Cross multiply
    80,813.03x = 121,212.25 × 28,219.32
  4. Step 4: Simplify right side
    80,813.03x = 3,420,527,200.12
  5. Step 5: Solve for x
    x = 3,420,527,200.12/80,813.03
  6. Step 6: Final answer
    x = 42,326.43

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1.5x scale

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.