Finding the Fourth Proportional to 80,715.26, 121,072.68 and 38,467.28
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Solution
The fourth proportional to 80,715.26, 121,072.68 and 38,467.28 is: 57,700.82
Step by Step Solution
- Step 1: Write the proportion equation
80,715.26 : 121,072.68 = 38,467.28 : x - Step 2: Convert to fraction form
80,715.26/121,072.68 = 38,467.28/x - Step 3: Cross multiply
80,715.26x = 121,072.68 × 38,467.28 - Step 4: Simplify right side
80,715.26x = 4,657,336,681.91 - Step 5: Solve for x
x = 4,657,336,681.91/80,715.26 - Step 6: Final answer
x = 57,700.82
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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.