Finding the Fourth Proportional to 80,393.21, 120,578.65 and 56,304.54
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Solution
The fourth proportional to 80,393.21, 120,578.65 and 56,304.54 is: 84,448.99
Step by Step Solution
- Step 1: Write the proportion equation
80,393.21 : 120,578.65 = 56,304.54 : x - Step 2: Convert to fraction form
80,393.21/120,578.65 = 56,304.54/x - Step 3: Cross multiply
80,393.21x = 120,578.65 × 56,304.54 - Step 4: Simplify right side
80,393.21x = 6,789,125,281.31 - Step 5: Solve for x
x = 6,789,125,281.31/80,393.21 - Step 6: Final answer
x = 84,448.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.