Finding the Fourth Proportional to 76,288,311.40, 114,432,467.10 and 18,780,125.80
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Solution
The fourth proportional to 76,288,311.40, 114,432,467.10 and 18,780,125.80 is: 28,170,188.70
Step by Step Solution
- Step 1: Write the proportion equation
76,288,311.40 : 114,432,467.10 = 18,780,125.80 : x - Step 2: Convert to fraction form
76,288,311.40/114,432,467.10 = 18,780,125.80/x - Step 3: Cross multiply
76,288,311.40x = 114,432,467.10 × 18,780,125.80 - Step 4: Simplify right side
76,288,311.40x = 2,149,056,127,742,361.25 - Step 5: Solve for x
x = 2,149,056,127,742,361.25/76,288,311.40 - Step 6: Final answer
x = 28,170,188.70
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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.