Finding the Fourth Proportional to 76,845.06, 106,046.58 and 42,855.60
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Solution
The fourth proportional to 76,845.06, 106,046.58 and 42,855.60 is: 59,140.95
Step by Step Solution
- Step 1: Write the proportion equation
76,845.06 : 106,046.58 = 42,855.60 : x - Step 2: Convert to fraction form
76,845.06/106,046.58 = 42,855.60/x - Step 3: Cross multiply
76,845.06x = 106,046.58 × 42,855.60 - Step 4: Simplify right side
76,845.06x = 4,544,689,813.85 - Step 5: Solve for x
x = 4,544,689,813.85/76,845.06 - Step 6: Final answer
x = 59,140.95
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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.