Finding the Fourth Proportional to 72,974.20, 109,453.05 and 19,670.14
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Solution
The fourth proportional to 72,974.20, 109,453.05 and 19,670.14 is: 29,502.99
Step by Step Solution
- Step 1: Write the proportion equation
72,974.20 : 109,453.05 = 19,670.14 : x - Step 2: Convert to fraction form
72,974.20/109,453.05 = 19,670.14/x - Step 3: Cross multiply
72,974.20x = 109,453.05 × 19,670.14 - Step 4: Simplify right side
72,974.20x = 2,152,956,816.93 - Step 5: Solve for x
x = 2,152,956,816.93/72,974.20 - Step 6: Final answer
x = 29,502.99
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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.