Home / 54,331.57-81,477.39-18,783.78

Finding the Fourth Proportional to 54,331.57, 81,477.39 and 18,783.78

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Solution

The fourth proportional to 54,331.57, 81,477.39 and 18,783.78 is: 28,168.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,331.57 : 81,477.39 = 18,783.78 : x
  2. Step 2: Convert to fraction form
    54,331.57/81,477.39 = 18,783.78/x
  3. Step 3: Cross multiply
    54,331.57x = 81,477.39 × 18,783.78
  4. Step 4: Simplify right side
    54,331.57x = 1,530,453,133.63
  5. Step 5: Solve for x
    x = 1,530,453,133.63/54,331.57
  6. Step 6: Final answer
    x = 28,168.76

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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.