Finding the Fourth Proportional to 79,021.71, 109,044.36 and 45,029.12
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Solution
The fourth proportional to 79,021.71, 109,044.36 and 45,029.12 is: 62,136.99
Step by Step Solution
- Step 1: Write the proportion equation
79,021.71 : 109,044.36 = 45,029.12 : x - Step 2: Convert to fraction form
79,021.71/109,044.36 = 45,029.12/x - Step 3: Cross multiply
79,021.71x = 109,044.36 × 45,029.12 - Step 4: Simplify right side
79,021.71x = 4,910,171,026.54 - Step 5: Solve for x
x = 4,910,171,026.54/79,021.71 - Step 6: Final answer
x = 62,136.99
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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.