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Finding the Fourth Proportional to 82,866.69, 124,299.97 and 20,537.19

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Solution

The fourth proportional to 82,866.69, 124,299.97 and 20,537.19 is: 30,805.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,866.69 : 124,299.97 = 20,537.19 : x
  2. Step 2: Convert to fraction form
    82,866.69/124,299.97 = 20,537.19/x
  3. Step 3: Cross multiply
    82,866.69x = 124,299.97 × 20,537.19
  4. Step 4: Simplify right side
    82,866.69x = 2,552,772,049.54
  5. Step 5: Solve for x
    x = 2,552,772,049.54/82,866.69
  6. Step 6: Final answer
    x = 30,805.77

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1.5x scale

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.