Finding the Fourth Proportional to 75,913.10, 113,869.38 and 29,133.20
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Solution
The fourth proportional to 75,913.10, 113,869.38 and 29,133.20 is: 43,699.70
Step by Step Solution
- Step 1: Write the proportion equation
75,913.10 : 113,869.38 = 29,133.20 : x - Step 2: Convert to fraction form
75,913.10/113,869.38 = 29,133.20/x - Step 3: Cross multiply
75,913.10x = 113,869.38 × 29,133.20 - Step 4: Simplify right side
75,913.10x = 3,317,379,421.42 - Step 5: Solve for x
x = 3,317,379,421.42/75,913.10 - Step 6: Final answer
x = 43,699.70
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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.