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Finding the Fourth Proportional to 85,114.22, 127,431.30 and 45,042.44

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Solution

The fourth proportional to 85,114.22, 127,431.30 and 45,042.44 is: 67,436.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,114.22 : 127,431.30 = 45,042.44 : x
  2. Step 2: Convert to fraction form
    85,114.22/127,431.30 = 45,042.44/x
  3. Step 3: Cross multiply
    85,114.22x = 127,431.30 × 45,042.44
  4. Step 4: Simplify right side
    85,114.22x = 5,739,817,171.86
  5. Step 5: Solve for x
    x = 5,739,817,171.86/85,114.22
  6. Step 6: Final answer
    x = 67,436.64

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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.