Finding the Fourth Proportional to 79,230.08, 109,338.72 and 43,419.80
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Solution
The fourth proportional to 79,230.08, 109,338.72 and 43,419.80 is: 59,919.99
Step by Step Solution
- Step 1: Write the proportion equation
79,230.08 : 109,338.72 = 43,419.80 : x - Step 2: Convert to fraction form
79,230.08/109,338.72 = 43,419.80/x - Step 3: Cross multiply
79,230.08x = 109,338.72 × 43,419.80 - Step 4: Simplify right side
79,230.08x = 4,747,465,354.66 - Step 5: Solve for x
x = 4,747,465,354.66/79,230.08 - Step 6: Final answer
x = 59,919.99
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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.