Finding the Fourth Proportional to 73,499.40, 101,430.18 and 39,966.12
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Solution
The fourth proportional to 73,499.40, 101,430.18 and 39,966.12 is: 55,153.79
Step by Step Solution
- Step 1: Write the proportion equation
73,499.40 : 101,430.18 = 39,966.12 : x - Step 2: Convert to fraction form
73,499.40/101,430.18 = 39,966.12/x - Step 3: Cross multiply
73,499.40x = 101,430.18 × 39,966.12 - Step 4: Simplify right side
73,499.40x = 4,053,770,745.50 - Step 5: Solve for x
x = 4,053,770,745.50/73,499.40 - Step 6: Final answer
x = 55,153.79
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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.