Home / 45,245.72-67,891.21-20,303.60

Finding the Fourth Proportional to 45,245.72, 67,891.21 and 20,303.60

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Solution

The fourth proportional to 45,245.72, 67,891.21 and 20,303.60 is: 30,465.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,245.72 : 67,891.21 = 20,303.60 : x
  2. Step 2: Convert to fraction form
    45,245.72/67,891.21 = 20,303.60/x
  3. Step 3: Cross multiply
    45,245.72x = 67,891.21 × 20,303.60
  4. Step 4: Simplify right side
    45,245.72x = 1,378,435,971.36
  5. Step 5: Solve for x
    x = 1,378,435,971.36/45,245.72
  6. Step 6: Final answer
    x = 30,465.56

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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.