Finding the Fourth Proportional to 97,649.70, 134,757.17 and 56,838.05
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Solution
The fourth proportional to 97,649.70, 134,757.17 and 56,838.05 is: 78,436.85
Step by Step Solution
- Step 1: Write the proportion equation
97,649.70 : 134,757.17 = 56,838.05 : x - Step 2: Convert to fraction form
97,649.70/134,757.17 = 56,838.05/x - Step 3: Cross multiply
97,649.70x = 134,757.17 × 56,838.05 - Step 4: Simplify right side
97,649.70x = 7,659,335,284.83 - Step 5: Solve for x
x = 7,659,335,284.83/97,649.70 - Step 6: Final answer
x = 78,436.85
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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.