Finding the Fourth Proportional to 83,708.64, 115,539.84 and 51,859.44
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Solution
The fourth proportional to 83,708.64, 115,539.84 and 51,859.44 is: 71,579.61
Step by Step Solution
- Step 1: Write the proportion equation
83,708.64 : 115,539.84 = 51,859.44 : x - Step 2: Convert to fraction form
83,708.64/115,539.84 = 51,859.44/x - Step 3: Cross multiply
83,708.64x = 115,539.84 × 51,859.44 - Step 4: Simplify right side
83,708.64x = 5,991,831,400.09 - Step 5: Solve for x
x = 5,991,831,400.09/83,708.64 - Step 6: Final answer
x = 71,579.61
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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.