Finding the Fourth Proportional to 75,881.80, 113,822.70 and 71,993.80
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Solution
The fourth proportional to 75,881.80, 113,822.70 and 71,993.80 is: 107,990.70
Step by Step Solution
- Step 1: Write the proportion equation
75,881.80 : 113,822.70 = 71,993.80 : x - Step 2: Convert to fraction form
75,881.80/113,822.70 = 71,993.80/x - Step 3: Cross multiply
75,881.80x = 113,822.70 × 71,993.80 - Step 4: Simplify right side
75,881.80x = 8,194,528,699.26 - Step 5: Solve for x
x = 8,194,528,699.26/75,881.80 - Step 6: Final answer
x = 107,990.70
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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.