Finding the Fourth Proportional to 87,429,847.36, 120,654,868.74 and 47,738,951.82
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Solution
The fourth proportional to 87,429,847.36, 120,654,868.74 and 47,738,951.82 is: 65,880,670.49
Step by Step Solution
- Step 1: Write the proportion equation
87,429,847.36 : 120,654,868.74 = 47,738,951.82 : x - Step 2: Convert to fraction form
87,429,847.36/120,654,868.74 = 47,738,951.82/x - Step 3: Cross multiply
87,429,847.36x = 120,654,868.74 × 47,738,951.82 - Step 4: Simplify right side
87,429,847.36x = 5,759,936,964,785,315 - Step 5: Solve for x
x = 5,759,936,964,785,315/87,429,847.36 - Step 6: Final answer
x = 65,880,670.49
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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.