Finding the Fourth Proportional to 90,493.74, 135,764.91 and 39,897.09
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Solution
The fourth proportional to 90,493.74, 135,764.91 and 39,897.09 is: 59,856.35
Step by Step Solution
- Step 1: Write the proportion equation
90,493.74 : 135,764.91 = 39,897.09 : x - Step 2: Convert to fraction form
90,493.74/135,764.91 = 39,897.09/x - Step 3: Cross multiply
90,493.74x = 135,764.91 × 39,897.09 - Step 4: Simplify right side
90,493.74x = 5,416,624,833.11 - Step 5: Solve for x
x = 5,416,624,833.11/90,493.74 - Step 6: Final answer
x = 59,856.35
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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.