Finding the Fourth Proportional to 76,817.70, 115,226.55 and 63,695.70
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Solution
The fourth proportional to 76,817.70, 115,226.55 and 63,695.70 is: 95,543.55
Step by Step Solution
- Step 1: Write the proportion equation
76,817.70 : 115,226.55 = 63,695.70 : x - Step 2: Convert to fraction form
76,817.70/115,226.55 = 63,695.70/x - Step 3: Cross multiply
76,817.70x = 115,226.55 × 63,695.70 - Step 4: Simplify right side
76,817.70x = 7,339,435,760.84 - Step 5: Solve for x
x = 7,339,435,760.84/76,817.70 - Step 6: Final answer
x = 95,543.55
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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.