Finding the Fourth Proportional to 86,292.70, 129,476.76 and 30,173.08
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Solution
The fourth proportional to 86,292.70, 129,476.76 and 30,173.08 is: 45,272.81
Step by Step Solution
- Step 1: Write the proportion equation
86,292.70 : 129,476.76 = 30,173.08 : x - Step 2: Convert to fraction form
86,292.70/129,476.76 = 30,173.08/x - Step 3: Cross multiply
86,292.70x = 129,476.76 × 30,173.08 - Step 4: Simplify right side
86,292.70x = 3,906,712,637.62 - Step 5: Solve for x
x = 3,906,712,637.62/86,292.70 - Step 6: Final answer
x = 45,272.81
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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.