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Finding the Fourth Proportional to 74,144.40, 111,167.46 and 40,880.40

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Solution

The fourth proportional to 74,144.40, 111,167.46 and 40,880.40 is: 61,293.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,144.40 : 111,167.46 = 40,880.40 : x
  2. Step 2: Convert to fraction form
    74,144.40/111,167.46 = 40,880.40/x
  3. Step 3: Cross multiply
    74,144.40x = 111,167.46 × 40,880.40
  4. Step 4: Simplify right side
    74,144.40x = 4,544,570,231.78
  5. Step 5: Solve for x
    x = 4,544,570,231.78/74,144.40
  6. Step 6: Final answer
    x = 61,293.51

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1.5x scale

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.