Finding the Fourth Proportional to 90,281.21, 135,421.47 and 27,101.05
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Solution
The fourth proportional to 90,281.21, 135,421.47 and 27,101.05 is: 40,651.47
Step by Step Solution
- Step 1: Write the proportion equation
90,281.21 : 135,421.47 = 27,101.05 : x - Step 2: Convert to fraction form
90,281.21/135,421.47 = 27,101.05/x - Step 3: Cross multiply
90,281.21x = 135,421.47 × 27,101.05 - Step 4: Simplify right side
90,281.21x = 3,670,063,690.99 - Step 5: Solve for x
x = 3,670,063,690.99/90,281.21 - Step 6: Final answer
x = 40,651.47
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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.