Finding the Fourth Proportional to 76,935.60, 115,194.87 and 39,921.84
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Solution
The fourth proportional to 76,935.60, 115,194.87 and 39,921.84 is: 59,774.55
Step by Step Solution
- Step 1: Write the proportion equation
76,935.60 : 115,194.87 = 39,921.84 : x - Step 2: Convert to fraction form
76,935.60/115,194.87 = 39,921.84/x - Step 3: Cross multiply
76,935.60x = 115,194.87 × 39,921.84 - Step 4: Simplify right side
76,935.60x = 4,598,791,168.96 - Step 5: Solve for x
x = 4,598,791,168.96/76,935.60 - Step 6: Final answer
x = 59,774.55
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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.