Finding the Fourth Proportional to 89,903.80, 134,855.70 and 48,431.80
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Solution
The fourth proportional to 89,903.80, 134,855.70 and 48,431.80 is: 72,647.70
Step by Step Solution
- Step 1: Write the proportion equation
89,903.80 : 134,855.70 = 48,431.80 : x - Step 2: Convert to fraction form
89,903.80/134,855.70 = 48,431.80/x - Step 3: Cross multiply
89,903.80x = 134,855.70 × 48,431.80 - Step 4: Simplify right side
89,903.80x = 6,531,304,291.26 - Step 5: Solve for x
x = 6,531,304,291.26/89,903.80 - Step 6: Final answer
x = 72,647.70
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1.5x scale
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.