Finding the Fourth Proportional to 79,841.24, 119,781.09 and 29,921.78
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Solution
The fourth proportional to 79,841.24, 119,781.09 and 29,921.78 is: 44,889.88
Step by Step Solution
- Step 1: Write the proportion equation
79,841.24 : 119,781.09 = 29,921.78 : x - Step 2: Convert to fraction form
79,841.24/119,781.09 = 29,921.78/x - Step 3: Cross multiply
79,841.24x = 119,781.09 × 29,921.78 - Step 4: Simplify right side
79,841.24x = 3,584,063,423.14 - Step 5: Solve for x
x = 3,584,063,423.14/79,841.24 - Step 6: Final answer
x = 44,889.88
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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.