Finding the Fourth Proportional to 53,134,391.92, 79,726,782.12 and 31,611,512.56
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Solution
The fourth proportional to 53,134,391.92, 79,726,782.12 and 31,611,512.56 is: 47,432,257.78
Step by Step Solution
- Step 1: Write the proportion equation
53,134,391.92 : 79,726,782.12 = 31,611,512.56 : x - Step 2: Convert to fraction form
53,134,391.92/79,726,782.12 = 31,611,512.56/x - Step 3: Cross multiply
53,134,391.92x = 79,726,782.12 × 31,611,512.56 - Step 4: Simplify right side
53,134,391.92x = 2,520,284,174,354,763.50 - Step 5: Solve for x
x = 2,520,284,174,354,763.50/53,134,391.92 - Step 6: Final answer
x = 47,432,257.78
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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.