Finding the Fourth Proportional to 111,537.81, 167,307.80 and 28,431.81
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Solution
The fourth proportional to 111,537.81, 167,307.80 and 28,431.81 is: 42,647.99
Step by Step Solution
- Step 1: Write the proportion equation
111,537.81 : 167,307.80 = 28,431.81 : x - Step 2: Convert to fraction form
111,537.81/167,307.80 = 28,431.81/x - Step 3: Cross multiply
111,537.81x = 167,307.80 × 28,431.81 - Step 4: Simplify right side
111,537.81x = 4,756,863,438.96 - Step 5: Solve for x
x = 4,756,863,438.96/111,537.81 - Step 6: Final answer
x = 42,647.99
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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.