Finding the Fourth Proportional to 87,135.75, 120,272.58 and 56,508.03
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Solution
The fourth proportional to 87,135.75, 120,272.58 and 56,508.03 is: 77,997.45
Step by Step Solution
- Step 1: Write the proportion equation
87,135.75 : 120,272.58 = 56,508.03 : x - Step 2: Convert to fraction form
87,135.75/120,272.58 = 56,508.03/x - Step 3: Cross multiply
87,135.75x = 120,272.58 × 56,508.03 - Step 4: Simplify right side
87,135.75x = 6,796,366,558.82 - Step 5: Solve for x
x = 6,796,366,558.82/87,135.75 - Step 6: Final answer
x = 77,997.45
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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.