Home / 45,443.06-68,111.21-20,453.85

Finding the Fourth Proportional to 45,443.06, 68,111.21 and 20,453.85

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Solution

The fourth proportional to 45,443.06, 68,111.21 and 20,453.85 is: 30,656.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,443.06 : 68,111.21 = 20,453.85 : x
  2. Step 2: Convert to fraction form
    45,443.06/68,111.21 = 20,453.85/x
  3. Step 3: Cross multiply
    45,443.06x = 68,111.21 × 20,453.85
  4. Step 4: Simplify right side
    45,443.06x = 1,393,136,472.66
  5. Step 5: Solve for x
    x = 1,393,136,472.66/45,443.06
  6. Step 6: Final answer
    x = 30,656.75

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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.