Finding the Fourth Proportional to 74,942.28, 112,442.58 and 68,818.68
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Solution
The fourth proportional to 74,942.28, 112,442.58 and 68,818.68 is: 103,254.80
Step by Step Solution
- Step 1: Write the proportion equation
74,942.28 : 112,442.58 = 68,818.68 : x - Step 2: Convert to fraction form
74,942.28/112,442.58 = 68,818.68/x - Step 3: Cross multiply
74,942.28x = 112,442.58 × 68,818.68 - Step 4: Simplify right side
74,942.28x = 7,738,149,931.39 - Step 5: Solve for x
x = 7,738,149,931.39/74,942.28 - Step 6: Final answer
x = 103,254.80
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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.