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Finding the Fourth Proportional to 74,940.75, 103,425.80 and 41,406.75

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Solution

The fourth proportional to 74,940.75, 103,425.80 and 41,406.75 is: 57,145.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,940.75 : 103,425.80 = 41,406.75 : x
  2. Step 2: Convert to fraction form
    74,940.75/103,425.80 = 41,406.75/x
  3. Step 3: Cross multiply
    74,940.75x = 103,425.80 × 41,406.75
  4. Step 4: Simplify right side
    74,940.75x = 4,282,526,244.15
  5. Step 5: Solve for x
    x = 4,282,526,244.15/74,940.75
  6. Step 6: Final answer
    x = 57,145.49

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1.5x scale

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.