Finding the Fourth Proportional to 90,633.14, 135,963.53 and 46,235.68
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Solution
The fourth proportional to 90,633.14, 135,963.53 and 46,235.68 is: 69,360.57
Step by Step Solution
- Step 1: Write the proportion equation
90,633.14 : 135,963.53 = 46,235.68 : x - Step 2: Convert to fraction form
90,633.14/135,963.53 = 46,235.68/x - Step 3: Cross multiply
90,633.14x = 135,963.53 × 46,235.68 - Step 4: Simplify right side
90,633.14x = 6,286,366,040.43 - Step 5: Solve for x
x = 6,286,366,040.43/90,633.14 - Step 6: Final answer
x = 69,360.57
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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.