Finding the Fourth Proportional to 75,804.72, 113,707.49 and 19,640.94
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Solution
The fourth proportional to 75,804.72, 113,707.49 and 19,640.94 is: 29,461.52
Step by Step Solution
- Step 1: Write the proportion equation
75,804.72 : 113,707.49 = 19,640.94 : x - Step 2: Convert to fraction form
75,804.72/113,707.49 = 19,640.94/x - Step 3: Cross multiply
75,804.72x = 113,707.49 × 19,640.94 - Step 4: Simplify right side
75,804.72x = 2,233,321,988.64 - Step 5: Solve for x
x = 2,233,321,988.64/75,804.72 - Step 6: Final answer
x = 29,461.52
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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.