Finding the Fourth Proportional to 87,230.42, 120,423.70 and 58,700.09
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Solution
The fourth proportional to 87,230.42, 120,423.70 and 58,700.09 is: 81,036.89
Step by Step Solution
- Step 1: Write the proportion equation
87,230.42 : 120,423.70 = 58,700.09 : x - Step 2: Convert to fraction form
87,230.42/120,423.70 = 58,700.09/x - Step 3: Cross multiply
87,230.42x = 120,423.70 × 58,700.09 - Step 4: Simplify right side
87,230.42x = 7,068,882,028.13 - Step 5: Solve for x
x = 7,068,882,028.13/87,230.42 - Step 6: Final answer
x = 81,036.89
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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.