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Finding the Fourth Proportional to 86,163.93, 129,245.94 and 27,004.20

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Solution

The fourth proportional to 86,163.93, 129,245.94 and 27,004.20 is: 40,506.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,163.93 : 129,245.94 = 27,004.20 : x
  2. Step 2: Convert to fraction form
    86,163.93/129,245.94 = 27,004.20/x
  3. Step 3: Cross multiply
    86,163.93x = 129,245.94 × 27,004.20
  4. Step 4: Simplify right side
    86,163.93x = 3,490,183,212.95
  5. Step 5: Solve for x
    x = 3,490,183,212.95/86,163.93
  6. Step 6: Final answer
    x = 40,506.31

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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.