Finding the Fourth Proportional to 84,036.16, 115,959.36 and 48,221.44
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Solution
The fourth proportional to 84,036.16, 115,959.36 and 48,221.44 is: 66,539.54
Step by Step Solution
- Step 1: Write the proportion equation
84,036.16 : 115,959.36 = 48,221.44 : x - Step 2: Convert to fraction form
84,036.16/115,959.36 = 48,221.44/x - Step 3: Cross multiply
84,036.16x = 115,959.36 × 48,221.44 - Step 4: Simplify right side
84,036.16x = 5,591,727,320.68 - Step 5: Solve for x
x = 5,591,727,320.68/84,036.16 - Step 6: Final answer
x = 66,539.54
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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.