Finding the Fourth Proportional to 79,649.84, 109,915.95 and 43,839.09
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Solution
The fourth proportional to 79,649.84, 109,915.95 and 43,839.09 is: 60,497.49
Step by Step Solution
- Step 1: Write the proportion equation
79,649.84 : 109,915.95 = 43,839.09 : x - Step 2: Convert to fraction form
79,649.84/109,915.95 = 43,839.09/x - Step 3: Cross multiply
79,649.84x = 109,915.95 × 43,839.09 - Step 4: Simplify right side
79,649.84x = 4,818,615,224.49 - Step 5: Solve for x
x = 4,818,615,224.49/79,649.84 - Step 6: Final answer
x = 60,497.49
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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.