Finding the Fourth Proportional to 77,013.20, 115,511.97 and 52,212.62
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Solution
The fourth proportional to 77,013.20, 115,511.97 and 52,212.62 is: 78,313.62
Step by Step Solution
- Step 1: Write the proportion equation
77,013.20 : 115,511.97 = 52,212.62 : x - Step 2: Convert to fraction form
77,013.20/115,511.97 = 52,212.62/x - Step 3: Cross multiply
77,013.20x = 115,511.97 × 52,212.62 - Step 4: Simplify right side
77,013.20x = 6,031,182,595.06 - Step 5: Solve for x
x = 6,031,182,595.06/77,013.20 - Step 6: Final answer
x = 78,313.62
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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.