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Finding the Fourth Proportional to 71,393.70, 107,090.55 and 43,745.70

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Solution

The fourth proportional to 71,393.70, 107,090.55 and 43,745.70 is: 65,618.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,393.70 : 107,090.55 = 43,745.70 : x
  2. Step 2: Convert to fraction form
    71,393.70/107,090.55 = 43,745.70/x
  3. Step 3: Cross multiply
    71,393.70x = 107,090.55 × 43,745.70
  4. Step 4: Simplify right side
    71,393.70x = 4,684,751,073.14
  5. Step 5: Solve for x
    x = 4,684,751,073.14/71,393.70
  6. Step 6: Final answer
    x = 65,618.55

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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.