Finding the Fourth Proportional to 102,706.71, 141,717.99 and 57,382.95
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Solution
The fourth proportional to 102,706.71, 141,717.99 and 57,382.95 is: 79,178.82
Step by Step Solution
- Step 1: Write the proportion equation
102,706.71 : 141,717.99 = 57,382.95 : x - Step 2: Convert to fraction form
102,706.71/141,717.99 = 57,382.95/x - Step 3: Cross multiply
102,706.71x = 141,717.99 × 57,382.95 - Step 4: Simplify right side
102,706.71x = 8,132,196,334.27 - Step 5: Solve for x
x = 8,132,196,334.27/102,706.71 - Step 6: Final answer
x = 79,178.82
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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.