Finding the Fourth Proportional to 96,729.18, 133,487.55 and 72,487.05
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Solution
The fourth proportional to 96,729.18, 133,487.55 and 72,487.05 is: 100,033.09
Step by Step Solution
- Step 1: Write the proportion equation
96,729.18 : 133,487.55 = 72,487.05 : x - Step 2: Convert to fraction form
96,729.18/133,487.55 = 72,487.05/x - Step 3: Cross multiply
96,729.18x = 133,487.55 × 72,487.05 - Step 4: Simplify right side
96,729.18x = 9,676,118,711.23 - Step 5: Solve for x
x = 9,676,118,711.23/96,729.18 - Step 6: Final answer
x = 100,033.09
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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.