Finding the Fourth Proportional to 80,964.84, 120,633.21 and 76,437.75
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Solution
The fourth proportional to 80,964.84, 120,633.21 and 76,437.75 is: 113,888.09
Step by Step Solution
- Step 1: Write the proportion equation
80,964.84 : 120,633.21 = 76,437.75 : x - Step 2: Convert to fraction form
80,964.84/120,633.21 = 76,437.75/x - Step 3: Cross multiply
80,964.84x = 120,633.21 × 76,437.75 - Step 4: Simplify right side
80,964.84x = 9,220,931,147.68 - Step 5: Solve for x
x = 9,220,931,147.68/80,964.84 - Step 6: Final answer
x = 113,888.09
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.