Finding the Fourth Proportional to 68,983.81, 103,548.11 and 61,136.53
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Solution
The fourth proportional to 68,983.81, 103,548.11 and 61,136.53 is: 91,768.95
Step by Step Solution
- Step 1: Write the proportion equation
68,983.81 : 103,548.11 = 61,136.53 : x - Step 2: Convert to fraction form
68,983.81/103,548.11 = 61,136.53/x - Step 3: Cross multiply
68,983.81x = 103,548.11 × 61,136.53 - Step 4: Simplify right side
68,983.81x = 6,330,571,568.91 - Step 5: Solve for x
x = 6,330,571,568.91/68,983.81 - Step 6: Final answer
x = 91,768.95
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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.