Finding the Fourth Proportional to 68,117.80, 102,176.70 and 47,122.60
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Solution
The fourth proportional to 68,117.80, 102,176.70 and 47,122.60 is: 70,683.90
Step by Step Solution
- Step 1: Write the proportion equation
68,117.80 : 102,176.70 = 47,122.60 : x - Step 2: Convert to fraction form
68,117.80/102,176.70 = 47,122.60/x - Step 3: Cross multiply
68,117.80x = 102,176.70 × 47,122.60 - Step 4: Simplify right side
68,117.80x = 4,814,831,763.42 - Step 5: Solve for x
x = 4,814,831,763.42/68,117.80 - Step 6: Final answer
x = 70,683.90
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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.