Home / 74,131.88-111,185.30-20,811.63

Finding the Fourth Proportional to 74,131.88, 111,185.30 and 20,811.63

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Solution

The fourth proportional to 74,131.88, 111,185.30 and 20,811.63 is: 31,213.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,131.88 : 111,185.30 = 20,811.63 : x
  2. Step 2: Convert to fraction form
    74,131.88/111,185.30 = 20,811.63/x
  3. Step 3: Cross multiply
    74,131.88x = 111,185.30 × 20,811.63
  4. Step 4: Simplify right side
    74,131.88x = 2,313,947,325.04
  5. Step 5: Solve for x
    x = 2,313,947,325.04/74,131.88
  6. Step 6: Final answer
    x = 31,213.93

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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.