Finding the Fourth Proportional to 76,858.22, 106,113.70 and 48,217.14
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Solution
The fourth proportional to 76,858.22, 106,113.70 and 48,217.14 is: 66,570.62
Step by Step Solution
- Step 1: Write the proportion equation
76,858.22 : 106,113.70 = 48,217.14 : x - Step 2: Convert to fraction form
76,858.22/106,113.70 = 48,217.14/x - Step 3: Cross multiply
76,858.22x = 106,113.70 × 48,217.14 - Step 4: Simplify right side
76,858.22x = 5,116,499,128.82 - Step 5: Solve for x
x = 5,116,499,128.82/76,858.22 - Step 6: Final answer
x = 66,570.62
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.