Finding the Fourth Proportional to 99,430.97, 149,146.46 and 28,355.09
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Solution
The fourth proportional to 99,430.97, 149,146.46 and 28,355.09 is: 42,532.64
Step by Step Solution
- Step 1: Write the proportion equation
99,430.97 : 149,146.46 = 28,355.09 : x - Step 2: Convert to fraction form
99,430.97/149,146.46 = 28,355.09/x - Step 3: Cross multiply
99,430.97x = 149,146.46 × 28,355.09 - Step 4: Simplify right side
99,430.97x = 4,229,061,154.71 - Step 5: Solve for x
x = 4,229,061,154.71/99,430.97 - Step 6: Final answer
x = 42,532.64
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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.