Finding the Fourth Proportional to 77,278,579.20, 115,917,868.80 and 41,446,771.20
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Solution
The fourth proportional to 77,278,579.20, 115,917,868.80 and 41,446,771.20 is: 62,170,156.80
Step by Step Solution
- Step 1: Write the proportion equation
77,278,579.20 : 115,917,868.80 = 41,446,771.20 : x - Step 2: Convert to fraction form
77,278,579.20/115,917,868.80 = 41,446,771.20/x - Step 3: Cross multiply
77,278,579.20x = 115,917,868.80 × 41,446,771.20 - Step 4: Simplify right side
77,278,579.20x = 4,804,421,386,145,219 - Step 5: Solve for x
x = 4,804,421,386,145,219/77,278,579.20 - Step 6: Final answer
x = 62,170,156.80
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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.