Finding the Fourth Proportional to 112,691.67, 155,513.93 and 61,703.48
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Solution
The fourth proportional to 112,691.67, 155,513.93 and 61,703.48 is: 85,150.48
Step by Step Solution
- Step 1: Write the proportion equation
112,691.67 : 155,513.93 = 61,703.48 : x - Step 2: Convert to fraction form
112,691.67/155,513.93 = 61,703.48/x - Step 3: Cross multiply
112,691.67x = 155,513.93 × 61,703.48 - Step 4: Simplify right side
112,691.67x = 9,595,749,891.91 - Step 5: Solve for x
x = 9,595,749,891.91/112,691.67 - Step 6: Final answer
x = 85,150.48
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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.