Finding the Fourth Proportional to 105,732.99, 145,915.74 and 57,988.08
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Solution
The fourth proportional to 105,732.99, 145,915.74 and 57,988.08 is: 80,025.86
Step by Step Solution
- Step 1: Write the proportion equation
105,732.99 : 145,915.74 = 57,988.08 : x - Step 2: Convert to fraction form
105,732.99/145,915.74 = 57,988.08/x - Step 3: Cross multiply
105,732.99x = 145,915.74 × 57,988.08 - Step 4: Simplify right side
105,732.99x = 8,461,373,604.38 - Step 5: Solve for x
x = 8,461,373,604.38/105,732.99 - Step 6: Final answer
x = 80,025.86
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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.