Home / 80,942.02-121,339.06-28,322.80

Finding the Fourth Proportional to 80,942.02, 121,339.06 and 28,322.80

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Solution

The fourth proportional to 80,942.02, 121,339.06 and 28,322.80 is: 42,458.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,942.02 : 121,339.06 = 28,322.80 : x
  2. Step 2: Convert to fraction form
    80,942.02/121,339.06 = 28,322.80/x
  3. Step 3: Cross multiply
    80,942.02x = 121,339.06 × 28,322.80
  4. Step 4: Simplify right side
    80,942.02x = 3,436,661,928.57
  5. Step 5: Solve for x
    x = 3,436,661,928.57/80,942.02
  6. Step 6: Final answer
    x = 42,458.32

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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.