Finding the Fourth Proportional to 70,911.28, 106,368.03 and 20,996.44
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Solution
The fourth proportional to 70,911.28, 106,368.03 and 20,996.44 is: 31,494.99
Step by Step Solution
- Step 1: Write the proportion equation
70,911.28 : 106,368.03 = 20,996.44 : x - Step 2: Convert to fraction form
70,911.28/106,368.03 = 20,996.44/x - Step 3: Cross multiply
70,911.28x = 106,368.03 × 20,996.44 - Step 4: Simplify right side
70,911.28x = 2,233,349,959.81 - Step 5: Solve for x
x = 2,233,349,959.81/70,911.28 - Step 6: Final answer
x = 31,494.99
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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.