Finding the Fourth Proportional to 79,586.21, 109,824.05 and 47,772.65
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Solution
The fourth proportional to 79,586.21, 109,824.05 and 47,772.65 is: 65,923.31
Step by Step Solution
- Step 1: Write the proportion equation
79,586.21 : 109,824.05 = 47,772.65 : x - Step 2: Convert to fraction form
79,586.21/109,824.05 = 47,772.65/x - Step 3: Cross multiply
79,586.21x = 109,824.05 × 47,772.65 - Step 4: Simplify right side
79,586.21x = 5,246,586,296.22 - Step 5: Solve for x
x = 5,246,586,296.22/79,586.21 - Step 6: Final answer
x = 65,923.31
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.