Finding the Fourth Proportional to 79,132.19, 109,204.32 and 43,322.09
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Solution
The fourth proportional to 79,132.19, 109,204.32 and 43,322.09 is: 59,785.52
Step by Step Solution
- Step 1: Write the proportion equation
79,132.19 : 109,204.32 = 43,322.09 : x - Step 2: Convert to fraction form
79,132.19/109,204.32 = 43,322.09/x - Step 3: Cross multiply
79,132.19x = 109,204.32 × 43,322.09 - Step 4: Simplify right side
79,132.19x = 4,730,958,833.41 - Step 5: Solve for x
x = 4,730,958,833.41/79,132.19 - Step 6: Final answer
x = 59,785.52
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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.