Finding the Fourth Proportional to 77,684.84, 107,201.64 and 47,520.80
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Solution
The fourth proportional to 77,684.84, 107,201.64 and 47,520.80 is: 65,576.60
Step by Step Solution
- Step 1: Write the proportion equation
77,684.84 : 107,201.64 = 47,520.80 : x - Step 2: Convert to fraction form
77,684.84/107,201.64 = 47,520.80/x - Step 3: Cross multiply
77,684.84x = 107,201.64 × 47,520.80 - Step 4: Simplify right side
77,684.84x = 5,094,307,694.11 - Step 5: Solve for x
x = 5,094,307,694.11/77,684.84 - Step 6: Final answer
x = 65,576.60
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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.