Finding the Fourth Proportional to 79,988.67, 110,371.68 and 45,990.54
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Solution
The fourth proportional to 79,988.67, 110,371.68 and 45,990.54 is: 63,459.65
Step by Step Solution
- Step 1: Write the proportion equation
79,988.67 : 110,371.68 = 45,990.54 : x - Step 2: Convert to fraction form
79,988.67/110,371.68 = 45,990.54/x - Step 3: Cross multiply
79,988.67x = 110,371.68 × 45,990.54 - Step 4: Simplify right side
79,988.67x = 5,076,053,163.91 - Step 5: Solve for x
x = 5,076,053,163.91/79,988.67 - Step 6: Final answer
x = 63,459.65
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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.