Finding the Fourth Proportional to 86,530.71, 129,853.98 and 30,371.08
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Solution
The fourth proportional to 86,530.71, 129,853.98 and 30,371.08 is: 45,576.95
Step by Step Solution
- Step 1: Write the proportion equation
86,530.71 : 129,853.98 = 30,371.08 : x - Step 2: Convert to fraction form
86,530.71/129,853.98 = 30,371.08/x - Step 3: Cross multiply
86,530.71x = 129,853.98 × 30,371.08 - Step 4: Simplify right side
86,530.71x = 3,943,805,463.04 - Step 5: Solve for x
x = 3,943,805,463.04/86,530.71 - Step 6: Final answer
x = 45,576.95
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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.