Home / 81,136.73-121,718.88-24,975.56

Finding the Fourth Proportional to 81,136.73, 121,718.88 and 24,975.56

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Solution

The fourth proportional to 81,136.73, 121,718.88 and 24,975.56 is: 37,467.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,136.73 : 121,718.88 = 24,975.56 : x
  2. Step 2: Convert to fraction form
    81,136.73/121,718.88 = 24,975.56/x
  3. Step 3: Cross multiply
    81,136.73x = 121,718.88 × 24,975.56
  4. Step 4: Simplify right side
    81,136.73x = 3,039,996,581.98
  5. Step 5: Solve for x
    x = 3,039,996,581.98/81,136.73
  6. Step 6: Final answer
    x = 37,467.58

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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.