Home / 54,518.70-81,783.45-18,974.55

Finding the Fourth Proportional to 54,518.70, 81,783.45 and 18,974.55

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Solution

The fourth proportional to 54,518.70, 81,783.45 and 18,974.55 is: 28,463.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,518.70 : 81,783.45 = 18,974.55 : x
  2. Step 2: Convert to fraction form
    54,518.70/81,783.45 = 18,974.55/x
  3. Step 3: Cross multiply
    54,518.70x = 81,783.45 × 18,974.55
  4. Step 4: Simplify right side
    54,518.70x = 1,551,804,161.20
  5. Step 5: Solve for x
    x = 1,551,804,161.20/54,518.70
  6. Step 6: Final answer
    x = 28,463.70

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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.