Finding the Fourth Proportional to 83,731.52, 125,316.62 and 68,737.82
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Solution
The fourth proportional to 83,731.52, 125,316.62 and 68,737.82 is: 102,876.32
Step by Step Solution
- Step 1: Write the proportion equation
83,731.52 : 125,316.62 = 68,737.82 : x - Step 2: Convert to fraction form
83,731.52/125,316.62 = 68,737.82/x - Step 3: Cross multiply
83,731.52x = 125,316.62 × 68,737.82 - Step 4: Simplify right side
83,731.52x = 8,613,990,556.06 - Step 5: Solve for x
x = 8,613,990,556.06/83,731.52 - Step 6: Final answer
x = 102,876.32
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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.