Finding the Fourth Proportional to 87,579.42, 120,733.11 and 62,385.18
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Solution
The fourth proportional to 87,579.42, 120,733.11 and 62,385.18 is: 86,001.45
Step by Step Solution
- Step 1: Write the proportion equation
87,579.42 : 120,733.11 = 62,385.18 : x - Step 2: Convert to fraction form
87,579.42/120,733.11 = 62,385.18/x - Step 3: Cross multiply
87,579.42x = 120,733.11 × 62,385.18 - Step 4: Simplify right side
87,579.42x = 7,531,956,799.31 - Step 5: Solve for x
x = 7,531,956,799.31/87,579.42 - Step 6: Final answer
x = 86,001.45
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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.