Finding the Fourth Proportional to 85,608.11, 128,380.23 and 29,432.31
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Solution
The fourth proportional to 85,608.11, 128,380.23 and 29,432.31 is: 44,137.49
Step by Step Solution
- Step 1: Write the proportion equation
85,608.11 : 128,380.23 = 29,432.31 : x - Step 2: Convert to fraction form
85,608.11/128,380.23 = 29,432.31/x - Step 3: Cross multiply
85,608.11x = 128,380.23 × 29,432.31 - Step 4: Simplify right side
85,608.11x = 3,778,526,727.23 - Step 5: Solve for x
x = 3,778,526,727.23/85,608.11 - Step 6: Final answer
x = 44,137.49
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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.