Finding the Fourth Proportional to 77,709,342.88, 107,287,290.14 and 49,467,650.84
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Solution
The fourth proportional to 77,709,342.88, 107,287,290.14 and 49,467,650.84 is: 68,296,166.35
Step by Step Solution
- Step 1: Write the proportion equation
77,709,342.88 : 107,287,290.14 = 49,467,650.84 : x - Step 2: Convert to fraction form
77,709,342.88/107,287,290.14 = 49,467,650.84/x - Step 3: Cross multiply
77,709,342.88x = 107,287,290.14 × 49,467,650.84 - Step 4: Simplify right side
77,709,342.88x = 5,307,250,208,215,295 - Step 5: Solve for x
x = 5,307,250,208,215,295/77,709,342.88 - Step 6: Final answer
x = 68,296,166.35
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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.