Finding the Fourth Proportional to 87,699.63, 131,551.08 and 28,535.07
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Solution
The fourth proportional to 87,699.63, 131,551.08 and 28,535.07 is: 42,803.14
Step by Step Solution
- Step 1: Write the proportion equation
87,699.63 : 131,551.08 = 28,535.07 : x - Step 2: Convert to fraction form
87,699.63/131,551.08 = 28,535.07/x - Step 3: Cross multiply
87,699.63x = 131,551.08 × 28,535.07 - Step 4: Simplify right side
87,699.63x = 3,753,819,276.38 - Step 5: Solve for x
x = 3,753,819,276.38/87,699.63 - Step 6: Final answer
x = 42,803.14
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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.