Finding the Fourth Proportional to 91,293.13, 126,536.68 and 86,037.09
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Solution
The fourth proportional to 91,293.13, 126,536.68 and 86,037.09 is: 119,251.56
Step by Step Solution
- Step 1: Write the proportion equation
91,293.13 : 126,536.68 = 86,037.09 : x - Step 2: Convert to fraction form
91,293.13/126,536.68 = 86,037.09/x - Step 3: Cross multiply
91,293.13x = 126,536.68 × 86,037.09 - Step 4: Simplify right side
91,293.13x = 10,886,847,358.50 - Step 5: Solve for x
x = 10,886,847,358.50/91,293.13 - Step 6: Final answer
x = 119,251.56
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.