Finding the Fourth Proportional to 72,821.62, 100,524.91 and 48,962.13
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Solution
The fourth proportional to 72,821.62, 100,524.91 and 48,962.13 is: 67,588.63
Step by Step Solution
- Step 1: Write the proportion equation
72,821.62 : 100,524.91 = 48,962.13 : x - Step 2: Convert to fraction form
72,821.62/100,524.91 = 48,962.13/x - Step 3: Cross multiply
72,821.62x = 100,524.91 × 48,962.13 - Step 4: Simplify right side
72,821.62x = 4,921,913,711.66 - Step 5: Solve for x
x = 4,921,913,711.66/72,821.62 - Step 6: Final answer
x = 67,588.63
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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.