Finding the Fourth Proportional to 93,861.18, 140,789.34 and 31,531.68
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Solution
The fourth proportional to 93,861.18, 140,789.34 and 31,531.68 is: 47,296.70
Step by Step Solution
- Step 1: Write the proportion equation
93,861.18 : 140,789.34 = 31,531.68 : x - Step 2: Convert to fraction form
93,861.18/140,789.34 = 31,531.68/x - Step 3: Cross multiply
93,861.18x = 140,789.34 × 31,531.68 - Step 4: Simplify right side
93,861.18x = 4,439,324,416.29 - Step 5: Solve for x
x = 4,439,324,416.29/93,861.18 - Step 6: Final answer
x = 47,296.70
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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.