Finding the Fourth Proportional to 79,929.42, 119,891.28 and 19,958.23
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Solution
The fourth proportional to 79,929.42, 119,891.28 and 19,958.23 is: 29,936.63
Step by Step Solution
- Step 1: Write the proportion equation
79,929.42 : 119,891.28 = 19,958.23 : x - Step 2: Convert to fraction form
79,929.42/119,891.28 = 19,958.23/x - Step 3: Cross multiply
79,929.42x = 119,891.28 × 19,958.23 - Step 4: Simplify right side
79,929.42x = 2,392,817,741.23 - Step 5: Solve for x
x = 2,392,817,741.23/79,929.42 - Step 6: Final answer
x = 29,936.63
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1.5x scale
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.