Finding the Fourth Proportional to 68,773.12, 103,159.84 and 18,853.94
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Solution
The fourth proportional to 68,773.12, 103,159.84 and 18,853.94 is: 28,280.95
Step by Step Solution
- Step 1: Write the proportion equation
68,773.12 : 103,159.84 = 18,853.94 : x - Step 2: Convert to fraction form
68,773.12/103,159.84 = 18,853.94/x - Step 3: Cross multiply
68,773.12x = 103,159.84 × 18,853.94 - Step 4: Simplify right side
68,773.12x = 1,944,969,433.77 - Step 5: Solve for x
x = 1,944,969,433.77/68,773.12 - Step 6: Final answer
x = 28,280.95
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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.