Finding the Fourth Proportional to 87,112.64, 120,283.18 and 66,937.70
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Solution
The fourth proportional to 87,112.64, 120,283.18 and 66,937.70 is: 92,426.08
Step by Step Solution
- Step 1: Write the proportion equation
87,112.64 : 120,283.18 = 66,937.70 : x - Step 2: Convert to fraction form
87,112.64/120,283.18 = 66,937.70/x - Step 3: Cross multiply
87,112.64x = 120,283.18 × 66,937.70 - Step 4: Simplify right side
87,112.64x = 8,051,479,417.89 - Step 5: Solve for x
x = 8,051,479,417.89/87,112.64 - Step 6: Final answer
x = 92,426.08
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1.5x scale
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.