Finding the Fourth Proportional to 107,699.63, 161,549.44 and 28,811.80
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Solution
The fourth proportional to 107,699.63, 161,549.44 and 28,811.80 is: 43,217.70
Step by Step Solution
- Step 1: Write the proportion equation
107,699.63 : 161,549.44 = 28,811.80 : x - Step 2: Convert to fraction form
107,699.63/161,549.44 = 28,811.80/x - Step 3: Cross multiply
107,699.63x = 161,549.44 × 28,811.80 - Step 4: Simplify right side
107,699.63x = 4,654,530,285.30 - Step 5: Solve for x
x = 4,654,530,285.30/107,699.63 - Step 6: Final answer
x = 43,217.70
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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.