Finding the Fourth Proportional to 76,846.40, 106,045.92 and 42,855.92
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Solution
The fourth proportional to 76,846.40, 106,045.92 and 42,855.92 is: 59,139.99
Step by Step Solution
- Step 1: Write the proportion equation
76,846.40 : 106,045.92 = 42,855.92 : x - Step 2: Convert to fraction form
76,846.40/106,045.92 = 42,855.92/x - Step 3: Cross multiply
76,846.40x = 106,045.92 × 42,855.92 - Step 4: Simplify right side
76,846.40x = 4,544,695,463.85 - Step 5: Solve for x
x = 4,544,695,463.85/76,846.40 - Step 6: Final answer
x = 59,139.99
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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.