Finding the Fourth Proportional to 76,942.21, 115,423.46 and 28,926.62
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Solution
The fourth proportional to 76,942.21, 115,423.46 and 28,926.62 is: 43,393.75
Step by Step Solution
- Step 1: Write the proportion equation
76,942.21 : 115,423.46 = 28,926.62 : x - Step 2: Convert to fraction form
76,942.21/115,423.46 = 28,926.62/x - Step 3: Cross multiply
76,942.21x = 115,423.46 × 28,926.62 - Step 4: Simplify right side
76,942.21x = 3,338,810,710.43 - Step 5: Solve for x
x = 3,338,810,710.43/76,942.21 - Step 6: Final answer
x = 43,393.75
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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.