Finding the Fourth Proportional to 86,385.74, 129,495.38 and 44,285.58
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Solution
The fourth proportional to 86,385.74, 129,495.38 and 44,285.58 is: 66,385.70
Step by Step Solution
- Step 1: Write the proportion equation
86,385.74 : 129,495.38 = 44,285.58 : x - Step 2: Convert to fraction form
86,385.74/129,495.38 = 44,285.58/x - Step 3: Cross multiply
86,385.74x = 129,495.38 × 44,285.58 - Step 4: Simplify right side
86,385.74x = 5,734,777,789.19 - Step 5: Solve for x
x = 5,734,777,789.19/86,385.74 - Step 6: Final answer
x = 66,385.70
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1.5x scale
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.