Home / 82,255.21-123,428.43-40,135.64

Finding the Fourth Proportional to 82,255.21, 123,428.43 and 40,135.64

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Solution

The fourth proportional to 82,255.21, 123,428.43 and 40,135.64 is: 60,225.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,255.21 : 123,428.43 = 40,135.64 : x
  2. Step 2: Convert to fraction form
    82,255.21/123,428.43 = 40,135.64/x
  3. Step 3: Cross multiply
    82,255.21x = 123,428.43 × 40,135.64
  4. Step 4: Simplify right side
    82,255.21x = 4,953,879,032.25
  5. Step 5: Solve for x
    x = 4,953,879,032.25/82,255.21
  6. Step 6: Final answer
    x = 60,225.72

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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.