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Finding the Fourth Proportional to 86,418.63, 129,627.63 and 33,791.04

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Solution

The fourth proportional to 86,418.63, 129,627.63 and 33,791.04 is: 50,686.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,418.63 : 129,627.63 = 33,791.04 : x
  2. Step 2: Convert to fraction form
    86,418.63/129,627.63 = 33,791.04/x
  3. Step 3: Cross multiply
    86,418.63x = 129,627.63 × 33,791.04
  4. Step 4: Simplify right side
    86,418.63x = 4,380,252,430.44
  5. Step 5: Solve for x
    x = 4,380,252,430.44/86,418.63
  6. Step 6: Final answer
    x = 50,686.44

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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.