Finding the Fourth Proportional to 78,374.28, 108,152.90 and 44,381.99
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Solution
The fourth proportional to 78,374.28, 108,152.90 and 44,381.99 is: 61,245.10
Step by Step Solution
- Step 1: Write the proportion equation
78,374.28 : 108,152.90 = 44,381.99 : x - Step 2: Convert to fraction form
78,374.28/108,152.90 = 44,381.99/x - Step 3: Cross multiply
78,374.28x = 108,152.90 × 44,381.99 - Step 4: Simplify right side
78,374.28x = 4,800,041,081.05 - Step 5: Solve for x
x = 4,800,041,081.05/78,374.28 - Step 6: Final answer
x = 61,245.10
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.