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Finding the Fourth Proportional to 74,479.78, 102,771.40 and 43,834.66

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Solution

The fourth proportional to 74,479.78, 102,771.40 and 43,834.66 is: 60,485.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,479.78 : 102,771.40 = 43,834.66 : x
  2. Step 2: Convert to fraction form
    74,479.78/102,771.40 = 43,834.66/x
  3. Step 3: Cross multiply
    74,479.78x = 102,771.40 × 43,834.66
  4. Step 4: Simplify right side
    74,479.78x = 4,504,949,040.34
  5. Step 5: Solve for x
    x = 4,504,949,040.34/74,479.78
  6. Step 6: Final answer
    x = 60,485.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.