Finding the Fourth Proportional to 79,870.19, 119,879.06 and 40,454.98
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Solution
The fourth proportional to 79,870.19, 119,879.06 and 40,454.98 is: 60,719.84
Step by Step Solution
- Step 1: Write the proportion equation
79,870.19 : 119,879.06 = 40,454.98 : x - Step 2: Convert to fraction form
79,870.19/119,879.06 = 40,454.98/x - Step 3: Cross multiply
79,870.19x = 119,879.06 × 40,454.98 - Step 4: Simplify right side
79,870.19x = 4,849,704,472.75 - Step 5: Solve for x
x = 4,849,704,472.75/79,870.19 - Step 6: Final answer
x = 60,719.84
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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.