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Finding the Fourth Proportional to 85,245.63, 117,638.97 and 47,519.88

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Solution

The fourth proportional to 85,245.63, 117,638.97 and 47,519.88 is: 65,577.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,245.63 : 117,638.97 = 47,519.88 : x
  2. Step 2: Convert to fraction form
    85,245.63/117,638.97 = 47,519.88/x
  3. Step 3: Cross multiply
    85,245.63x = 117,638.97 × 47,519.88
  4. Step 4: Simplify right side
    85,245.63x = 5,590,189,737.72
  5. Step 5: Solve for x
    x = 5,590,189,737.72/85,245.63
  6. Step 6: Final answer
    x = 65,577.43

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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.