Finding the Fourth Proportional to 83,361.21, 115,038.46 and 45,120.75
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Solution
The fourth proportional to 83,361.21, 115,038.46 and 45,120.75 is: 62,266.63
Step by Step Solution
- Step 1: Write the proportion equation
83,361.21 : 115,038.46 = 45,120.75 : x - Step 2: Convert to fraction form
83,361.21/115,038.46 = 45,120.75/x - Step 3: Cross multiply
83,361.21x = 115,038.46 × 45,120.75 - Step 4: Simplify right side
83,361.21x = 5,190,621,481.24 - Step 5: Solve for x
x = 5,190,621,481.24/83,361.21 - Step 6: Final answer
x = 62,266.63
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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.