Finding the Fourth Proportional to 79,209.32, 109,343.09 and 47,372.06
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Solution
The fourth proportional to 79,209.32, 109,343.09 and 47,372.06 is: 65,393.92
Step by Step Solution
- Step 1: Write the proportion equation
79,209.32 : 109,343.09 = 47,372.06 : x - Step 2: Convert to fraction form
79,209.32/109,343.09 = 47,372.06/x - Step 3: Cross multiply
79,209.32x = 109,343.09 × 47,372.06 - Step 4: Simplify right side
79,209.32x = 5,179,807,811.85 - Step 5: Solve for x
x = 5,179,807,811.85/79,209.32 - Step 6: Final answer
x = 65,393.92
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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.