Finding the Fourth Proportional to 83,636.72, 115,342.12 and 54,944.99
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Solution
The fourth proportional to 83,636.72, 115,342.12 and 54,944.99 is: 75,773.79
Step by Step Solution
- Step 1: Write the proportion equation
83,636.72 : 115,342.12 = 54,944.99 : x - Step 2: Convert to fraction form
83,636.72/115,342.12 = 54,944.99/x - Step 3: Cross multiply
83,636.72x = 115,342.12 × 54,944.99 - Step 4: Simplify right side
83,636.72x = 6,337,471,629.98 - Step 5: Solve for x
x = 6,337,471,629.98/83,636.72 - Step 6: Final answer
x = 75,773.79
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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.