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Finding the Fourth Proportional to 81,361.46, 112,279.09 and 45,551.54

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Solution

The fourth proportional to 81,361.46, 112,279.09 and 45,551.54 is: 62,861.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,361.46 : 112,279.09 = 45,551.54 : x
  2. Step 2: Convert to fraction form
    81,361.46/112,279.09 = 45,551.54/x
  3. Step 3: Cross multiply
    81,361.46x = 112,279.09 × 45,551.54
  4. Step 4: Simplify right side
    81,361.46x = 5,114,485,459.30
  5. Step 5: Solve for x
    x = 5,114,485,459.30/81,361.46
  6. Step 6: Final answer
    x = 62,861.28

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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.