Finding the Fourth Proportional to 74,631.44, 102,987.95 and 40,639.79
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Solution
The fourth proportional to 74,631.44, 102,987.95 and 40,639.79 is: 56,081.03
Step by Step Solution
- Step 1: Write the proportion equation
74,631.44 : 102,987.95 = 40,639.79 : x - Step 2: Convert to fraction form
74,631.44/102,987.95 = 40,639.79/x - Step 3: Cross multiply
74,631.44x = 102,987.95 × 40,639.79 - Step 4: Simplify right side
74,631.44x = 4,185,407,942.39 - Step 5: Solve for x
x = 4,185,407,942.39/74,631.44 - Step 6: Final answer
x = 56,081.03
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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.