Finding the Fourth Proportional to 79,649.99, 109,916.12 and 43,839.22
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Solution
The fourth proportional to 79,649.99, 109,916.12 and 43,839.22 is: 60,497.65
Step by Step Solution
- Step 1: Write the proportion equation
79,649.99 : 109,916.12 = 43,839.22 : x - Step 2: Convert to fraction form
79,649.99/109,916.12 = 43,839.22/x - Step 3: Cross multiply
79,649.99x = 109,916.12 × 43,839.22 - Step 4: Simplify right side
79,649.99x = 4,818,636,966.23 - Step 5: Solve for x
x = 4,818,636,966.23/79,649.99 - Step 6: Final answer
x = 60,497.65
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1.5x scale
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.