Finding the Fourth Proportional to 86,292.84, 129,430.74 and 27,126.93
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Solution
The fourth proportional to 86,292.84, 129,430.74 and 27,126.93 is: 40,687.72
Step by Step Solution
- Step 1: Write the proportion equation
86,292.84 : 129,430.74 = 27,126.93 : x - Step 2: Convert to fraction form
86,292.84/129,430.74 = 27,126.93/x - Step 3: Cross multiply
86,292.84x = 129,430.74 × 27,126.93 - Step 4: Simplify right side
86,292.84x = 3,511,058,623.83 - Step 5: Solve for x
x = 3,511,058,623.83/86,292.84 - Step 6: Final answer
x = 40,687.72
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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.