Home / 54,439.86-81,664.95-21,162.50

Finding the Fourth Proportional to 54,439.86, 81,664.95 and 21,162.50

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Solution

The fourth proportional to 54,439.86, 81,664.95 and 21,162.50 is: 31,745.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,439.86 : 81,664.95 = 21,162.50 : x
  2. Step 2: Convert to fraction form
    54,439.86/81,664.95 = 21,162.50/x
  3. Step 3: Cross multiply
    54,439.86x = 81,664.95 × 21,162.50
  4. Step 4: Simplify right side
    54,439.86x = 1,728,234,096.05
  5. Step 5: Solve for x
    x = 1,728,234,096.05/54,439.86
  6. Step 6: Final answer
    x = 31,745.75

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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.