Finding the Fourth Proportional to 85,567.58, 128,229.68 and 40,540.94
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Solution
The fourth proportional to 85,567.58, 128,229.68 and 40,540.94 is: 60,753.75
Step by Step Solution
- Step 1: Write the proportion equation
85,567.58 : 128,229.68 = 40,540.94 : x - Step 2: Convert to fraction form
85,567.58/128,229.68 = 40,540.94/x - Step 3: Cross multiply
85,567.58x = 128,229.68 × 40,540.94 - Step 4: Simplify right side
85,567.58x = 5,198,551,763.10 - Step 5: Solve for x
x = 5,198,551,763.10/85,567.58 - Step 6: Final answer
x = 60,753.75
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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.