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Finding the Fourth Proportional to 86,004.67, 129,015.15 and 33,418.21

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Solution

The fourth proportional to 86,004.67, 129,015.15 and 33,418.21 is: 50,130.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,004.67 : 129,015.15 = 33,418.21 : x
  2. Step 2: Convert to fraction form
    86,004.67/129,015.15 = 33,418.21/x
  3. Step 3: Cross multiply
    86,004.67x = 129,015.15 × 33,418.21
  4. Step 4: Simplify right side
    86,004.67x = 4,311,455,375.88
  5. Step 5: Solve for x
    x = 4,311,455,375.88/86,004.67
  6. Step 6: Final answer
    x = 50,130.48

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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.