Home / 54,455.48-81,651.51-21,136.62

Finding the Fourth Proportional to 54,455.48, 81,651.51 and 21,136.62

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Solution

The fourth proportional to 54,455.48, 81,651.51 and 21,136.62 is: 31,692.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,455.48 : 81,651.51 = 21,136.62 : x
  2. Step 2: Convert to fraction form
    54,455.48/81,651.51 = 21,136.62/x
  3. Step 3: Cross multiply
    54,455.48x = 81,651.51 × 21,136.62
  4. Step 4: Simplify right side
    54,455.48x = 1,725,837,318.78
  5. Step 5: Solve for x
    x = 1,725,837,318.78/54,455.48
  6. Step 6: Final answer
    x = 31,692.63

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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.