Finding the Fourth Proportional to 68,479.21, 102,543.45 and 47,390.05
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Solution
The fourth proportional to 68,479.21, 102,543.45 and 47,390.05 is: 70,963.72
Step by Step Solution
- Step 1: Write the proportion equation
68,479.21 : 102,543.45 = 47,390.05 : x - Step 2: Convert to fraction form
68,479.21/102,543.45 = 47,390.05/x - Step 3: Cross multiply
68,479.21x = 102,543.45 × 47,390.05 - Step 4: Simplify right side
68,479.21x = 4,859,539,222.67 - Step 5: Solve for x
x = 4,859,539,222.67/68,479.21 - Step 6: Final answer
x = 70,963.72
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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.