Home / 82,857.21-124,218.32-38,511.87

Finding the Fourth Proportional to 82,857.21, 124,218.32 and 38,511.87

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Solution

The fourth proportional to 82,857.21, 124,218.32 and 38,511.87 is: 57,736.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,857.21 : 124,218.32 = 38,511.87 : x
  2. Step 2: Convert to fraction form
    82,857.21/124,218.32 = 38,511.87/x
  3. Step 3: Cross multiply
    82,857.21x = 124,218.32 × 38,511.87
  4. Step 4: Simplify right side
    82,857.21x = 4,783,879,598.90
  5. Step 5: Solve for x
    x = 4,783,879,598.90/82,857.21
  6. Step 6: Final answer
    x = 57,736.43

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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.