Finding the Fourth Proportional to 81,636.93, 122,338.56 and 46,503.99
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Solution
The fourth proportional to 81,636.93, 122,338.56 and 46,503.99 is: 69,689.43
Step by Step Solution
- Step 1: Write the proportion equation
81,636.93 : 122,338.56 = 46,503.99 : x - Step 2: Convert to fraction form
81,636.93/122,338.56 = 46,503.99/x - Step 3: Cross multiply
81,636.93x = 122,338.56 × 46,503.99 - Step 4: Simplify right side
81,636.93x = 5,689,231,170.85 - Step 5: Solve for x
x = 5,689,231,170.85/81,636.93 - Step 6: Final answer
x = 69,689.43
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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.