Finding the Fourth Proportional to 76,944.60, 115,208.46 and 39,930.84
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Solution
The fourth proportional to 76,944.60, 115,208.46 and 39,930.84 is: 59,788.09
Step by Step Solution
- Step 1: Write the proportion equation
76,944.60 : 115,208.46 = 39,930.84 : x - Step 2: Convert to fraction form
76,944.60/115,208.46 = 39,930.84/x - Step 3: Cross multiply
76,944.60x = 115,208.46 × 39,930.84 - Step 4: Simplify right side
76,944.60x = 4,600,370,582.91 - Step 5: Solve for x
x = 4,600,370,582.91/76,944.60 - Step 6: Final answer
x = 59,788.09
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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.