Finding the Fourth Proportional to 98,129.58, 135,422.09 and 55,116.66
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Solution
The fourth proportional to 98,129.58, 135,422.09 and 55,116.66 is: 76,062.82
Step by Step Solution
- Step 1: Write the proportion equation
98,129.58 : 135,422.09 = 55,116.66 : x - Step 2: Convert to fraction form
98,129.58/135,422.09 = 55,116.66/x - Step 3: Cross multiply
98,129.58x = 135,422.09 × 55,116.66 - Step 4: Simplify right side
98,129.58x = 7,464,013,015.44 - Step 5: Solve for x
x = 7,464,013,015.44/98,129.58 - Step 6: Final answer
x = 76,062.82
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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.