Finding the Fourth Proportional to 115,806.42, 159,799.41 and 64,821.99
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Solution
The fourth proportional to 115,806.42, 159,799.41 and 64,821.99 is: 89,446.82
Step by Step Solution
- Step 1: Write the proportion equation
115,806.42 : 159,799.41 = 64,821.99 : x - Step 2: Convert to fraction form
115,806.42/159,799.41 = 64,821.99/x - Step 3: Cross multiply
115,806.42x = 159,799.41 × 64,821.99 - Step 4: Simplify right side
115,806.42x = 10,358,515,757.03 - Step 5: Solve for x
x = 10,358,515,757.03/115,806.42 - Step 6: Final answer
x = 89,446.82
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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.