Finding the Fourth Proportional to 74,612.44, 102,961.95 and 40,620.19
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Solution
The fourth proportional to 74,612.44, 102,961.95 and 40,620.19 is: 56,054.11
Step by Step Solution
- Step 1: Write the proportion equation
74,612.44 : 102,961.95 = 40,620.19 : x - Step 2: Convert to fraction form
74,612.44/102,961.95 = 40,620.19/x - Step 3: Cross multiply
74,612.44x = 102,961.95 × 40,620.19 - Step 4: Simplify right side
74,612.44x = 4,182,333,971.77 - Step 5: Solve for x
x = 4,182,333,971.77/74,612.44 - Step 6: Final answer
x = 56,054.11
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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.