Finding the Fourth Proportional to 77,658.18, 106,946.46 and 69,935.70
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Solution
The fourth proportional to 77,658.18, 106,946.46 and 69,935.70 is: 96,311.50
Step by Step Solution
- Step 1: Write the proportion equation
77,658.18 : 106,946.46 = 69,935.70 : x - Step 2: Convert to fraction form
77,658.18/106,946.46 = 69,935.70/x - Step 3: Cross multiply
77,658.18x = 106,946.46 × 69,935.70 - Step 4: Simplify right side
77,658.18x = 7,479,375,542.62 - Step 5: Solve for x
x = 7,479,375,542.62/77,658.18 - Step 6: Final answer
x = 96,311.50
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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.