Finding the Fourth Proportional to 90,615.99, 135,948.59 and 27,438.23
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Solution
The fourth proportional to 90,615.99, 135,948.59 and 27,438.23 is: 41,164.80
Step by Step Solution
- Step 1: Write the proportion equation
90,615.99 : 135,948.59 = 27,438.23 : x - Step 2: Convert to fraction form
90,615.99/135,948.59 = 27,438.23/x - Step 3: Cross multiply
90,615.99x = 135,948.59 × 27,438.23 - Step 4: Simplify right side
90,615.99x = 3,730,189,063.34 - Step 5: Solve for x
x = 3,730,189,063.34/90,615.99 - Step 6: Final answer
x = 41,164.80
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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.