Finding the Fourth Proportional to 83,158.38, 114,879.99 and 71,960.94
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Solution
The fourth proportional to 83,158.38, 114,879.99 and 71,960.94 is: 99,411.17
Step by Step Solution
- Step 1: Write the proportion equation
83,158.38 : 114,879.99 = 71,960.94 : x - Step 2: Convert to fraction form
83,158.38/114,879.99 = 71,960.94/x - Step 3: Cross multiply
83,158.38x = 114,879.99 × 71,960.94 - Step 4: Simplify right side
83,158.38x = 8,266,872,067.59 - Step 5: Solve for x
x = 8,266,872,067.59/83,158.38 - Step 6: Final answer
x = 99,411.17
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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.