Finding the Fourth Proportional to 99,702.09, 149,538.96 and 28,630.94
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Solution
The fourth proportional to 99,702.09, 149,538.96 and 28,630.94 is: 42,942.33
Step by Step Solution
- Step 1: Write the proportion equation
99,702.09 : 149,538.96 = 28,630.94 : x - Step 2: Convert to fraction form
99,702.09/149,538.96 = 28,630.94/x - Step 3: Cross multiply
99,702.09x = 149,538.96 × 28,630.94 - Step 4: Simplify right side
99,702.09x = 4,281,440,243.73 - Step 5: Solve for x
x = 4,281,440,243.73/99,702.09 - Step 6: Final answer
x = 42,942.33
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.