Finding the Fourth Proportional to 78,122.76, 116,953.74 and 48,445.08
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Solution
The fourth proportional to 78,122.76, 116,953.74 and 48,445.08 is: 72,524.75
Step by Step Solution
- Step 1: Write the proportion equation
78,122.76 : 116,953.74 = 48,445.08 : x - Step 2: Convert to fraction form
78,122.76/116,953.74 = 48,445.08/x - Step 3: Cross multiply
78,122.76x = 116,953.74 × 48,445.08 - Step 4: Simplify right side
78,122.76x = 5,665,833,290.60 - Step 5: Solve for x
x = 5,665,833,290.60/78,122.76 - Step 6: Final answer
x = 72,524.75
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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.