Finding the Fourth Proportional to 78,897.24, 118,170.36 and 72,750.96
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Solution
The fourth proportional to 78,897.24, 118,170.36 and 72,750.96 is: 108,964.61
Step by Step Solution
- Step 1: Write the proportion equation
78,897.24 : 118,170.36 = 72,750.96 : x - Step 2: Convert to fraction form
78,897.24/118,170.36 = 72,750.96/x - Step 3: Cross multiply
78,897.24x = 118,170.36 × 72,750.96 - Step 4: Simplify right side
78,897.24x = 8,597,007,133.55 - Step 5: Solve for x
x = 8,597,007,133.55/78,897.24 - Step 6: Final answer
x = 108,964.61
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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.