Finding the Fourth Proportional to 74,951.33, 103,431.60 and 40,959.09
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Solution
The fourth proportional to 74,951.33, 103,431.60 and 40,959.09 is: 56,522.87
Step by Step Solution
- Step 1: Write the proportion equation
74,951.33 : 103,431.60 = 40,959.09 : x - Step 2: Convert to fraction form
74,951.33/103,431.60 = 40,959.09/x - Step 3: Cross multiply
74,951.33x = 103,431.60 × 40,959.09 - Step 4: Simplify right side
74,951.33x = 4,236,464,213.24 - Step 5: Solve for x
x = 4,236,464,213.24/74,951.33 - Step 6: Final answer
x = 56,522.87
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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.