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Finding the Fourth Proportional to 74,165.63, 102,361.73 and 71,704.85

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Solution

The fourth proportional to 74,165.63, 102,361.73 and 71,704.85 is: 98,965.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,165.63 : 102,361.73 = 71,704.85 : x
  2. Step 2: Convert to fraction form
    74,165.63/102,361.73 = 71,704.85/x
  3. Step 3: Cross multiply
    74,165.63x = 102,361.73 × 71,704.85
  4. Step 4: Simplify right side
    74,165.63x = 7,339,831,625.06
  5. Step 5: Solve for x
    x = 7,339,831,625.06/74,165.63
  6. Step 6: Final answer
    x = 98,965.41

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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.