Finding the Fourth Proportional to 75,212.36, 112,817.67 and 18,286.59
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Solution
The fourth proportional to 75,212.36, 112,817.67 and 18,286.59 is: 27,429.66
Step by Step Solution
- Step 1: Write the proportion equation
75,212.36 : 112,817.67 = 18,286.59 : x - Step 2: Convert to fraction form
75,212.36/112,817.67 = 18,286.59/x - Step 3: Cross multiply
75,212.36x = 112,817.67 × 18,286.59 - Step 4: Simplify right side
75,212.36x = 2,063,049,820.52 - Step 5: Solve for x
x = 2,063,049,820.52/75,212.36 - Step 6: Final answer
x = 27,429.66
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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.