Finding the Fourth Proportional to 97,689.40, 146,532.50 and 31,128.62
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Solution
The fourth proportional to 97,689.40, 146,532.50 and 31,128.62 is: 46,692.42
Step by Step Solution
- Step 1: Write the proportion equation
97,689.40 : 146,532.50 = 31,128.62 : x - Step 2: Convert to fraction form
97,689.40/146,532.50 = 31,128.62/x - Step 3: Cross multiply
97,689.40x = 146,532.50 × 31,128.62 - Step 4: Simplify right side
97,689.40x = 4,561,354,510.15 - Step 5: Solve for x
x = 4,561,354,510.15/97,689.40 - Step 6: Final answer
x = 46,692.42
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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.