Finding the Fourth Proportional to 79,941.28, 110,351.36 and 48,137.44
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Solution
The fourth proportional to 79,941.28, 110,351.36 and 48,137.44 is: 66,449.17
Step by Step Solution
- Step 1: Write the proportion equation
79,941.28 : 110,351.36 = 48,137.44 : x - Step 2: Convert to fraction form
79,941.28/110,351.36 = 48,137.44/x - Step 3: Cross multiply
79,941.28x = 110,351.36 × 48,137.44 - Step 4: Simplify right side
79,941.28x = 5,312,031,970.92 - Step 5: Solve for x
x = 5,312,031,970.92/79,941.28 - Step 6: Final answer
x = 66,449.17
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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.