Finding the Fourth Proportional to 83,716.17, 115,558.64 and 55,430.97
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Solution
The fourth proportional to 83,716.17, 115,558.64 and 55,430.97 is: 76,514.82
Step by Step Solution
- Step 1: Write the proportion equation
83,716.17 : 115,558.64 = 55,430.97 : x - Step 2: Convert to fraction form
83,716.17/115,558.64 = 55,430.97/x - Step 3: Cross multiply
83,716.17x = 115,558.64 × 55,430.97 - Step 4: Simplify right side
83,716.17x = 6,405,527,507.08 - Step 5: Solve for x
x = 6,405,527,507.08/83,716.17 - Step 6: Final answer
x = 76,514.82
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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.