Finding the Fourth Proportional to 75,489.12, 104,190.09 and 57,552.09
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Solution
The fourth proportional to 75,489.12, 104,190.09 and 57,552.09 is: 79,433.40
Step by Step Solution
- Step 1: Write the proportion equation
75,489.12 : 104,190.09 = 57,552.09 : x - Step 2: Convert to fraction form
75,489.12/104,190.09 = 57,552.09/x - Step 3: Cross multiply
75,489.12x = 104,190.09 × 57,552.09 - Step 4: Simplify right side
75,489.12x = 5,996,357,436.79 - Step 5: Solve for x
x = 5,996,357,436.79/75,489.12 - Step 6: Final answer
x = 79,433.40
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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.