Home / 82,100.75-123,112.85-42,647.27

Finding the Fourth Proportional to 82,100.75, 123,112.85 and 42,647.27

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Solution

The fourth proportional to 82,100.75, 123,112.85 and 42,647.27 is: 63,951.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,100.75 : 123,112.85 = 42,647.27 : x
  2. Step 2: Convert to fraction form
    82,100.75/123,112.85 = 42,647.27/x
  3. Step 3: Cross multiply
    82,100.75x = 123,112.85 × 42,647.27
  4. Step 4: Simplify right side
    82,100.75x = 5,250,426,125.62
  5. Step 5: Solve for x
    x = 5,250,426,125.62/82,100.75
  6. Step 6: Final answer
    x = 63,951.02

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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.