Finding the Fourth Proportional to 77,405.40, 106,734.24 and 50,497.20
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Solution
The fourth proportional to 77,405.40, 106,734.24 and 50,497.20 is: 69,630.55
Step by Step Solution
- Step 1: Write the proportion equation
77,405.40 : 106,734.24 = 50,497.20 : x - Step 2: Convert to fraction form
77,405.40/106,734.24 = 50,497.20/x - Step 3: Cross multiply
77,405.40x = 106,734.24 × 50,497.20 - Step 4: Simplify right side
77,405.40x = 5,389,780,264.13 - Step 5: Solve for x
x = 5,389,780,264.13/77,405.40 - Step 6: Final answer
x = 69,630.55
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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.