Finding the Fourth Proportional to 87,340.64, 120,434.70 and 58,997.12
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Solution
The fourth proportional to 87,340.64, 120,434.70 and 58,997.12 is: 81,351.60
Step by Step Solution
- Step 1: Write the proportion equation
87,340.64 : 120,434.70 = 58,997.12 : x - Step 2: Convert to fraction form
87,340.64/120,434.70 = 58,997.12/x - Step 3: Cross multiply
87,340.64x = 120,434.70 × 58,997.12 - Step 4: Simplify right side
87,340.64x = 7,105,300,448.06 - Step 5: Solve for x
x = 7,105,300,448.06/87,340.64 - Step 6: Final answer
x = 81,351.60
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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.