Finding the Fourth Proportional to 90,369.84, 135,370.68 and 42,840.87
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Solution
The fourth proportional to 90,369.84, 135,370.68 and 42,840.87 is: 64,174.04
Step by Step Solution
- Step 1: Write the proportion equation
90,369.84 : 135,370.68 = 42,840.87 : x - Step 2: Convert to fraction form
90,369.84/135,370.68 = 42,840.87/x - Step 3: Cross multiply
90,369.84x = 135,370.68 × 42,840.87 - Step 4: Simplify right side
90,369.84x = 5,799,397,703.69 - Step 5: Solve for x
x = 5,799,397,703.69/90,369.84 - Step 6: Final answer
x = 64,174.04
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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.