Home / 49,387.68-68,136.64-31,478.56

Finding the Fourth Proportional to 49,387.68, 68,136.64 and 31,478.56

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Solution

The fourth proportional to 49,387.68, 68,136.64 and 31,478.56 is: 43,428.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,387.68 : 68,136.64 = 31,478.56 : x
  2. Step 2: Convert to fraction form
    49,387.68/68,136.64 = 31,478.56/x
  3. Step 3: Cross multiply
    49,387.68x = 68,136.64 × 31,478.56
  4. Step 4: Simplify right side
    49,387.68x = 2,144,843,310.44
  5. Step 5: Solve for x
    x = 2,144,843,310.44/49,387.68
  6. Step 6: Final answer
    x = 43,428.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.