Home / 45,297.72-67,969.13-20,355.57

Finding the Fourth Proportional to 45,297.72, 67,969.13 and 20,355.57

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Solution

The fourth proportional to 45,297.72, 67,969.13 and 20,355.57 is: 30,543.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,297.72 : 67,969.13 = 20,355.57 : x
  2. Step 2: Convert to fraction form
    45,297.72/67,969.13 = 20,355.57/x
  3. Step 3: Cross multiply
    45,297.72x = 67,969.13 × 20,355.57
  4. Step 4: Simplify right side
    45,297.72x = 1,383,550,281.78
  5. Step 5: Solve for x
    x = 1,383,550,281.78/45,297.72
  6. Step 6: Final answer
    x = 30,543.49

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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.