Finding the Fourth Proportional to 91,887.60, 126,711.60 and 86,530.08
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Solution
The fourth proportional to 91,887.60, 126,711.60 and 86,530.08 is: 119,323.66
Step by Step Solution
- Step 1: Write the proportion equation
91,887.60 : 126,711.60 = 86,530.08 : x - Step 2: Convert to fraction form
91,887.60/126,711.60 = 86,530.08/x - Step 3: Cross multiply
91,887.60x = 126,711.60 × 86,530.08 - Step 4: Simplify right side
91,887.60x = 10,964,364,884.93 - Step 5: Solve for x
x = 10,964,364,884.93/91,887.60 - Step 6: Final answer
x = 119,323.66
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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.