Finding the Fourth Proportional to 81,868.24, 122,639.82 and 63,083.13
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Solution
The fourth proportional to 81,868.24, 122,639.82 and 63,083.13 is: 94,499.45
Step by Step Solution
- Step 1: Write the proportion equation
81,868.24 : 122,639.82 = 63,083.13 : x - Step 2: Convert to fraction form
81,868.24/122,639.82 = 63,083.13/x - Step 3: Cross multiply
81,868.24x = 122,639.82 × 63,083.13 - Step 4: Simplify right side
81,868.24x = 7,736,503,708.24 - Step 5: Solve for x
x = 7,736,503,708.24/81,868.24 - Step 6: Final answer
x = 94,499.45
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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.