Finding the Fourth Proportional to 128,708.48, 193,015.36 and 44,447.20
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Solution
The fourth proportional to 128,708.48, 193,015.36 and 44,447.20 is: 66,654.45
Step by Step Solution
- Step 1: Write the proportion equation
128,708.48 : 193,015.36 = 44,447.20 : x - Step 2: Convert to fraction form
128,708.48/193,015.36 = 44,447.20/x - Step 3: Cross multiply
128,708.48x = 193,015.36 × 44,447.20 - Step 4: Simplify right side
128,708.48x = 8,578,992,308.99 - Step 5: Solve for x
x = 8,578,992,308.99/128,708.48 - Step 6: Final answer
x = 66,654.45
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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.