Finding the Fourth Proportional to 78,563.21, 117,841.97 and 34,189.98
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Solution
The fourth proportional to 78,563.21, 117,841.97 and 34,189.98 is: 51,283.73
Step by Step Solution
- Step 1: Write the proportion equation
78,563.21 : 117,841.97 = 34,189.98 : x - Step 2: Convert to fraction form
78,563.21/117,841.97 = 34,189.98/x - Step 3: Cross multiply
78,563.21x = 117,841.97 × 34,189.98 - Step 4: Simplify right side
78,563.21x = 4,029,014,426.51 - Step 5: Solve for x
x = 4,029,014,426.51/78,563.21 - Step 6: Final answer
x = 51,283.73
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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.