Finding the Fourth Proportional to 86,395.89, 129,611.45 and 48,972.67
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Solution
The fourth proportional to 86,395.89, 129,611.45 and 48,972.67 is: 73,468.99
Step by Step Solution
- Step 1: Write the proportion equation
86,395.89 : 129,611.45 = 48,972.67 : x - Step 2: Convert to fraction form
86,395.89/129,611.45 = 48,972.67/x - Step 3: Cross multiply
86,395.89x = 129,611.45 × 48,972.67 - Step 4: Simplify right side
86,395.89x = 6,347,418,769.07 - Step 5: Solve for x
x = 6,347,418,769.07/86,395.89 - Step 6: Final answer
x = 73,468.99
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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.