Finding the Fourth Proportional to 83,678.27, 115,442.62 and 53,455.75
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Solution
The fourth proportional to 83,678.27, 115,442.62 and 53,455.75 is: 73,747.60
Step by Step Solution
- Step 1: Write the proportion equation
83,678.27 : 115,442.62 = 53,455.75 : x - Step 2: Convert to fraction form
83,678.27/115,442.62 = 53,455.75/x - Step 3: Cross multiply
83,678.27x = 115,442.62 × 53,455.75 - Step 4: Simplify right side
83,678.27x = 6,171,071,411.82 - Step 5: Solve for x
x = 6,171,071,411.82/83,678.27 - Step 6: Final answer
x = 73,747.60
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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.