Finding the Fourth Proportional to 98,879.82, 136,478.57 and 56,462.96
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Solution
The fourth proportional to 98,879.82, 136,478.57 and 56,462.96 is: 77,932.82
Step by Step Solution
- Step 1: Write the proportion equation
98,879.82 : 136,478.57 = 56,462.96 : x - Step 2: Convert to fraction form
98,879.82/136,478.57 = 56,462.96/x - Step 3: Cross multiply
98,879.82x = 136,478.57 × 56,462.96 - Step 4: Simplify right side
98,879.82x = 7,705,983,074.06 - Step 5: Solve for x
x = 7,705,983,074.06/98,879.82 - Step 6: Final answer
x = 77,932.82
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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.