Finding the Fourth Proportional to 75,876.20, 113,814.30 and 19,711.70
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Solution
The fourth proportional to 75,876.20, 113,814.30 and 19,711.70 is: 29,567.55
Step by Step Solution
- Step 1: Write the proportion equation
75,876.20 : 113,814.30 = 19,711.70 : x - Step 2: Convert to fraction form
75,876.20/113,814.30 = 19,711.70/x - Step 3: Cross multiply
75,876.20x = 113,814.30 × 19,711.70 - Step 4: Simplify right side
75,876.20x = 2,243,473,337.31 - Step 5: Solve for x
x = 2,243,473,337.31/75,876.20 - Step 6: Final answer
x = 29,567.55
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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.