Finding the Fourth Proportional to 79,862.69, 119,589.14 and 77,497.70
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Solution
The fourth proportional to 79,862.69, 119,589.14 and 77,497.70 is: 116,047.71
Step by Step Solution
- Step 1: Write the proportion equation
79,862.69 : 119,589.14 = 77,497.70 : x - Step 2: Convert to fraction form
79,862.69/119,589.14 = 77,497.70/x - Step 3: Cross multiply
79,862.69x = 119,589.14 × 77,497.70 - Step 4: Simplify right side
79,862.69x = 9,267,882,890.78 - Step 5: Solve for x
x = 9,267,882,890.78/79,862.69 - Step 6: Final answer
x = 116,047.71
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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.