Finding the Fourth Proportional to 74,640.21, 102,996.71 and 44,420.66
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Solution
The fourth proportional to 74,640.21, 102,996.71 and 44,420.66 is: 61,296.47
Step by Step Solution
- Step 1: Write the proportion equation
74,640.21 : 102,996.71 = 44,420.66 : x - Step 2: Convert to fraction form
74,640.21/102,996.71 = 44,420.66/x - Step 3: Cross multiply
74,640.21x = 102,996.71 × 44,420.66 - Step 4: Simplify right side
74,640.21x = 4,575,181,098.94 - Step 5: Solve for x
x = 4,575,181,098.94/74,640.21 - Step 6: Final answer
x = 61,296.47
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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.