Finding the Fourth Proportional to 79,161.12, 118,756.62 and 31,779.92
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Solution
The fourth proportional to 79,161.12, 118,756.62 and 31,779.92 is: 47,675.88
Step by Step Solution
- Step 1: Write the proportion equation
79,161.12 : 118,756.62 = 31,779.92 : x - Step 2: Convert to fraction form
79,161.12/118,756.62 = 31,779.92/x - Step 3: Cross multiply
79,161.12x = 118,756.62 × 31,779.92 - Step 4: Simplify right side
79,161.12x = 3,774,076,179.96 - Step 5: Solve for x
x = 3,774,076,179.96/79,161.12 - Step 6: Final answer
x = 47,675.88
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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.