Finding the Fourth Proportional to 86,268.77, 129,408.60 and 27,106.79
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Solution
The fourth proportional to 86,268.77, 129,408.60 and 27,106.79 is: 40,661.90
Step by Step Solution
- Step 1: Write the proportion equation
86,268.77 : 129,408.60 = 27,106.79 : x - Step 2: Convert to fraction form
86,268.77/129,408.60 = 27,106.79/x - Step 3: Cross multiply
86,268.77x = 129,408.60 × 27,106.79 - Step 4: Simplify right side
86,268.77x = 3,507,851,744.39 - Step 5: Solve for x
x = 3,507,851,744.39/86,268.77 - Step 6: Final answer
x = 40,661.90
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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.