Home / 72,074.32-108,111.49-18,766.15

Finding the Fourth Proportional to 72,074.32, 108,111.49 and 18,766.15

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Solution

The fourth proportional to 72,074.32, 108,111.49 and 18,766.15 is: 28,149.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,074.32 : 108,111.49 = 18,766.15 : x
  2. Step 2: Convert to fraction form
    72,074.32/108,111.49 = 18,766.15/x
  3. Step 3: Cross multiply
    72,074.32x = 108,111.49 × 18,766.15
  4. Step 4: Simplify right side
    72,074.32x = 2,028,836,135.14
  5. Step 5: Solve for x
    x = 2,028,836,135.14/72,074.32
  6. Step 6: Final answer
    x = 28,149.22

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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.