Finding the Fourth Proportional to 91,102,902.42, 125,722,005.30 and 49,849,794.84
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Solution
The fourth proportional to 91,102,902.42, 125,722,005.30 and 49,849,794.84 is: 68,792,716.86
Step by Step Solution
- Step 1: Write the proportion equation
91,102,902.42 : 125,722,005.30 = 49,849,794.84 : x - Step 2: Convert to fraction form
91,102,902.42/125,722,005.30 = 49,849,794.84/x - Step 3: Cross multiply
91,102,902.42x = 125,722,005.30 × 49,849,794.84 - Step 4: Simplify right side
91,102,902.42x = 6,267,216,171,078,393 - Step 5: Solve for x
x = 6,267,216,171,078,393/91,102,902.42 - Step 6: Final answer
x = 68,792,716.86
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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.