Finding the Fourth Proportional to 74,516.31, 102,802.18 and 42,244.09
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Solution
The fourth proportional to 74,516.31, 102,802.18 and 42,244.09 is: 58,279.65
Step by Step Solution
- Step 1: Write the proportion equation
74,516.31 : 102,802.18 = 42,244.09 : x - Step 2: Convert to fraction form
74,516.31/102,802.18 = 42,244.09/x - Step 3: Cross multiply
74,516.31x = 102,802.18 × 42,244.09 - Step 4: Simplify right side
74,516.31x = 4,342,784,067.95 - Step 5: Solve for x
x = 4,342,784,067.95/74,516.31 - Step 6: Final answer
x = 58,279.65
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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.