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Finding the Fourth Proportional to 74,168.64, 111,280.32 and 34,738.56

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Solution

The fourth proportional to 74,168.64, 111,280.32 and 34,738.56 is: 52,120.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,168.64 : 111,280.32 = 34,738.56 : x
  2. Step 2: Convert to fraction form
    74,168.64/111,280.32 = 34,738.56/x
  3. Step 3: Cross multiply
    74,168.64x = 111,280.32 × 34,738.56
  4. Step 4: Simplify right side
    74,168.64x = 3,865,718,073.14
  5. Step 5: Solve for x
    x = 3,865,718,073.14/74,168.64
  6. Step 6: Final answer
    x = 52,120.65

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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.