Home / 45,131.72-67,736.46-21,777.80

Finding the Fourth Proportional to 45,131.72, 67,736.46 and 21,777.80

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Solution

The fourth proportional to 45,131.72, 67,736.46 and 21,777.80 is: 32,685.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,131.72 : 67,736.46 = 21,777.80 : x
  2. Step 2: Convert to fraction form
    45,131.72/67,736.46 = 21,777.80/x
  3. Step 3: Cross multiply
    45,131.72x = 67,736.46 × 21,777.80
  4. Step 4: Simplify right side
    45,131.72x = 1,475,151,078.59
  5. Step 5: Solve for x
    x = 1,475,151,078.59/45,131.72
  6. Step 6: Final answer
    x = 32,685.46

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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.