Finding the Fourth Proportional to 86,853.76, 119,816.64 and 50,555.20
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Solution
The fourth proportional to 86,853.76, 119,816.64 and 50,555.20 is: 69,741.99
Step by Step Solution
- Step 1: Write the proportion equation
86,853.76 : 119,816.64 = 50,555.20 : x - Step 2: Convert to fraction form
86,853.76/119,816.64 = 50,555.20/x - Step 3: Cross multiply
86,853.76x = 119,816.64 × 50,555.20 - Step 4: Simplify right side
86,853.76x = 6,057,354,198.53 - Step 5: Solve for x
x = 6,057,354,198.53/86,853.76 - Step 6: Final answer
x = 69,741.99
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1.5x scale
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.