Finding the Fourth Proportional to 87,360.21, 120,519.14 and 55,512.02
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Solution
The fourth proportional to 87,360.21, 120,519.14 and 55,512.02 is: 76,582.47
Step by Step Solution
- Step 1: Write the proportion equation
87,360.21 : 120,519.14 = 55,512.02 : x - Step 2: Convert to fraction form
87,360.21/120,519.14 = 55,512.02/x - Step 3: Cross multiply
87,360.21x = 120,519.14 × 55,512.02 - Step 4: Simplify right side
87,360.21x = 6,690,260,029.91 - Step 5: Solve for x
x = 6,690,260,029.91/87,360.21 - Step 6: Final answer
x = 76,582.47
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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.