Finding the Fourth Proportional to 81,982.88, 122,696.57 and 50,412.95
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Solution
The fourth proportional to 81,982.88, 122,696.57 and 50,412.95 is: 75,448.62
Step by Step Solution
- Step 1: Write the proportion equation
81,982.88 : 122,696.57 = 50,412.95 : x - Step 2: Convert to fraction form
81,982.88/122,696.57 = 50,412.95/x - Step 3: Cross multiply
81,982.88x = 122,696.57 × 50,412.95 - Step 4: Simplify right side
81,982.88x = 6,185,495,561.13 - Step 5: Solve for x
x = 6,185,495,561.13/81,982.88 - Step 6: Final answer
x = 75,448.62
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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.