Finding the Fourth Proportional to 87,121.08, 120,182.78 and 56,924.09
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Solution
The fourth proportional to 87,121.08, 120,182.78 and 56,924.09 is: 78,526.28
Step by Step Solution
- Step 1: Write the proportion equation
87,121.08 : 120,182.78 = 56,924.09 : x - Step 2: Convert to fraction form
87,121.08/120,182.78 = 56,924.09/x - Step 3: Cross multiply
87,121.08x = 120,182.78 × 56,924.09 - Step 4: Simplify right side
87,121.08x = 6,841,294,499.64 - Step 5: Solve for x
x = 6,841,294,499.64/87,121.08 - Step 6: Final answer
x = 78,526.28
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.