Finding the Fourth Proportional to 83,771.72, 115,601.80 and 47,965.08
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Solution
The fourth proportional to 83,771.72, 115,601.80 and 47,965.08 is: 66,189.99
Step by Step Solution
- Step 1: Write the proportion equation
83,771.72 : 115,601.80 = 47,965.08 : x - Step 2: Convert to fraction form
83,771.72/115,601.80 = 47,965.08/x - Step 3: Cross multiply
83,771.72x = 115,601.80 × 47,965.08 - Step 4: Simplify right side
83,771.72x = 5,544,849,585.14 - Step 5: Solve for x
x = 5,544,849,585.14/83,771.72 - Step 6: Final answer
x = 66,189.99
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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.