Finding the Fourth Proportional to 74,339.90, 102,674.26 and 48,959.70
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Solution
The fourth proportional to 74,339.90, 102,674.26 and 48,959.70 is: 67,620.50
Step by Step Solution
- Step 1: Write the proportion equation
74,339.90 : 102,674.26 = 48,959.70 : x - Step 2: Convert to fraction form
74,339.90/102,674.26 = 48,959.70/x - Step 3: Cross multiply
74,339.90x = 102,674.26 × 48,959.70 - Step 4: Simplify right side
74,339.90x = 5,026,900,967.32 - Step 5: Solve for x
x = 5,026,900,967.32/74,339.90 - Step 6: Final answer
x = 67,620.50
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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.