Finding the Fourth Proportional to 85,618.42, 128,395.70 and 29,442.62
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Solution
The fourth proportional to 85,618.42, 128,395.70 and 29,442.62 is: 44,152.95
Step by Step Solution
- Step 1: Write the proportion equation
85,618.42 : 128,395.70 = 29,442.62 : x - Step 2: Convert to fraction form
85,618.42/128,395.70 = 29,442.62/x - Step 3: Cross multiply
85,618.42x = 128,395.70 × 29,442.62 - Step 4: Simplify right side
85,618.42x = 3,780,306,088.92 - Step 5: Solve for x
x = 3,780,306,088.92/85,618.42 - Step 6: Final answer
x = 44,152.95
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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.