Finding the Fourth Proportional to 98,021.41, 135,345.74 and 75,324.60
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Solution
The fourth proportional to 98,021.41, 135,345.74 and 75,324.60 is: 104,006.50
Step by Step Solution
- Step 1: Write the proportion equation
98,021.41 : 135,345.74 = 75,324.60 : x - Step 2: Convert to fraction form
98,021.41/135,345.74 = 75,324.60/x - Step 3: Cross multiply
98,021.41x = 135,345.74 × 75,324.60 - Step 4: Simplify right side
98,021.41x = 10,194,863,350.58 - Step 5: Solve for x
x = 10,194,863,350.58/98,021.41 - Step 6: Final answer
x = 104,006.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.