Finding the Fourth Proportional to 87,130.74, 120,277.20 and 58,874.70
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Solution
The fourth proportional to 87,130.74, 120,277.20 and 58,874.70 is: 81,271.94
Step by Step Solution
- Step 1: Write the proportion equation
87,130.74 : 120,277.20 = 58,874.70 : x - Step 2: Convert to fraction form
87,130.74/120,277.20 = 58,874.70/x - Step 3: Cross multiply
87,130.74x = 120,277.20 × 58,874.70 - Step 4: Simplify right side
87,130.74x = 7,081,284,066.84 - Step 5: Solve for x
x = 7,081,284,066.84/87,130.74 - Step 6: Final answer
x = 81,271.94
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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.