Home / 82,965.92-124,448.65-20,636.42

Finding the Fourth Proportional to 82,965.92, 124,448.65 and 20,636.42

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Solution

The fourth proportional to 82,965.92, 124,448.65 and 20,636.42 is: 30,954.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,965.92 : 124,448.65 = 20,636.42 : x
  2. Step 2: Convert to fraction form
    82,965.92/124,448.65 = 20,636.42/x
  3. Step 3: Cross multiply
    82,965.92x = 124,448.65 × 20,636.42
  4. Step 4: Simplify right side
    82,965.92x = 2,568,174,869.36
  5. Step 5: Solve for x
    x = 2,568,174,869.36/82,965.92
  6. Step 6: Final answer
    x = 30,954.57

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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.