Home / 80,621.02-120,984.21-30,701.61

Finding the Fourth Proportional to 80,621.02, 120,984.21 and 30,701.61

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Solution

The fourth proportional to 80,621.02, 120,984.21 and 30,701.61 is: 46,072.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,621.02 : 120,984.21 = 30,701.61 : x
  2. Step 2: Convert to fraction form
    80,621.02/120,984.21 = 30,701.61/x
  3. Step 3: Cross multiply
    80,621.02x = 120,984.21 × 30,701.61
  4. Step 4: Simplify right side
    80,621.02x = 3,714,410,031.58
  5. Step 5: Solve for x
    x = 3,714,410,031.58/80,621.02
  6. Step 6: Final answer
    x = 46,072.48

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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.