Home / 54,138.87-81,213.21-16,699.50

Finding the Fourth Proportional to 54,138.87, 81,213.21 and 16,699.50

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Solution

The fourth proportional to 54,138.87, 81,213.21 and 16,699.50 is: 25,050.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,138.87 : 81,213.21 = 16,699.50 : x
  2. Step 2: Convert to fraction form
    54,138.87/81,213.21 = 16,699.50/x
  3. Step 3: Cross multiply
    54,138.87x = 81,213.21 × 16,699.50
  4. Step 4: Simplify right side
    54,138.87x = 1,356,220,000.40
  5. Step 5: Solve for x
    x = 1,356,220,000.40/54,138.87
  6. Step 6: Final answer
    x = 25,050.76

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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.