Finding the Fourth Proportional to 83,955.64, 115,869.84 and 48,138.64
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Solution
The fourth proportional to 83,955.64, 115,869.84 and 48,138.64 is: 66,437.66
Step by Step Solution
- Step 1: Write the proportion equation
83,955.64 : 115,869.84 = 48,138.64 : x - Step 2: Convert to fraction form
83,955.64/115,869.84 = 48,138.64/x - Step 3: Cross multiply
83,955.64x = 115,869.84 × 48,138.64 - Step 4: Simplify right side
83,955.64x = 5,577,816,514.62 - Step 5: Solve for x
x = 5,577,816,514.62/83,955.64 - Step 6: Final answer
x = 66,437.66
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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.