Home / 90,544.58-135,841.02-31,380.20

Finding the Fourth Proportional to 90,544.58, 135,841.02 and 31,380.20

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Solution

The fourth proportional to 90,544.58, 135,841.02 and 31,380.20 is: 47,078.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,544.58 : 135,841.02 = 31,380.20 : x
  2. Step 2: Convert to fraction form
    90,544.58/135,841.02 = 31,380.20/x
  3. Step 3: Cross multiply
    90,544.58x = 135,841.02 × 31,380.20
  4. Step 4: Simplify right side
    90,544.58x = 4,262,718,375.80
  5. Step 5: Solve for x
    x = 4,262,718,375.80/90,544.58
  6. Step 6: Final answer
    x = 47,078.67

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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.