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Finding the Fourth Proportional to 36,485.78, 50,350.34 and 19,718.78

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Solution

The fourth proportional to 36,485.78, 50,350.34 and 19,718.78 is: 27,211.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,485.78 : 50,350.34 = 19,718.78 : x
  2. Step 2: Convert to fraction form
    36,485.78/50,350.34 = 19,718.78/x
  3. Step 3: Cross multiply
    36,485.78x = 50,350.34 × 19,718.78
  4. Step 4: Simplify right side
    36,485.78x = 992,847,277.39
  5. Step 5: Solve for x
    x = 992,847,277.39/36,485.78
  6. Step 6: Final answer
    x = 27,211.90

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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.