Finding the Fourth Proportional to 76,690.76, 115,083.94 and 29,310.08
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Solution
The fourth proportional to 76,690.76, 115,083.94 and 29,310.08 is: 43,983.39
Step by Step Solution
- Step 1: Write the proportion equation
76,690.76 : 115,083.94 = 29,310.08 : x - Step 2: Convert to fraction form
76,690.76/115,083.94 = 29,310.08/x - Step 3: Cross multiply
76,690.76x = 115,083.94 × 29,310.08 - Step 4: Simplify right side
76,690.76x = 3,373,119,488.12 - Step 5: Solve for x
x = 3,373,119,488.12/76,690.76 - Step 6: Final answer
x = 43,983.39
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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.