Home / 45,147.72-67,765.34-21,790.60

Finding the Fourth Proportional to 45,147.72, 67,765.34 and 21,790.60

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Solution

The fourth proportional to 45,147.72, 67,765.34 and 21,790.60 is: 32,707.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,147.72 : 67,765.34 = 21,790.60 : x
  2. Step 2: Convert to fraction form
    45,147.72/67,765.34 = 21,790.60/x
  3. Step 3: Cross multiply
    45,147.72x = 67,765.34 × 21,790.60
  4. Step 4: Simplify right side
    45,147.72x = 1,476,647,417.80
  5. Step 5: Solve for x
    x = 1,476,647,417.80/45,147.72
  6. Step 6: Final answer
    x = 32,707.02

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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.