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Finding the Fourth Proportional to 49,807.40, 74,751.90 and 49,418.60

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Solution

The fourth proportional to 49,807.40, 74,751.90 and 49,418.60 is: 74,168.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,807.40 : 74,751.90 = 49,418.60 : x
  2. Step 2: Convert to fraction form
    49,807.40/74,751.90 = 49,418.60/x
  3. Step 3: Cross multiply
    49,807.40x = 74,751.90 × 49,418.60
  4. Step 4: Simplify right side
    49,807.40x = 3,694,134,245.34
  5. Step 5: Solve for x
    x = 3,694,134,245.34/49,807.40
  6. Step 6: Final answer
    x = 74,168.38

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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.