Finding the Fourth Proportional to 75,624.70, 113,437.05 and 74,458.30
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Solution
The fourth proportional to 75,624.70, 113,437.05 and 74,458.30 is: 111,687.45
Step by Step Solution
- Step 1: Write the proportion equation
75,624.70 : 113,437.05 = 74,458.30 : x - Step 2: Convert to fraction form
75,624.70/113,437.05 = 74,458.30/x - Step 3: Cross multiply
75,624.70x = 113,437.05 × 74,458.30 - Step 4: Simplify right side
75,624.70x = 8,446,329,900.02 - Step 5: Solve for x
x = 8,446,329,900.02/75,624.70 - Step 6: Final answer
x = 111,687.45
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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.