Finding the Fourth Proportional to 77,278,923.20, 115,918,384.80 and 41,447,115.20
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Solution
The fourth proportional to 77,278,923.20, 115,918,384.80 and 41,447,115.20 is: 62,170,672.80
Step by Step Solution
- Step 1: Write the proportion equation
77,278,923.20 : 115,918,384.80 = 41,447,115.20 : x - Step 2: Convert to fraction form
77,278,923.20/115,918,384.80 = 41,447,115.20/x - Step 3: Cross multiply
77,278,923.20x = 115,918,384.80 × 41,447,115.20 - Step 4: Simplify right side
77,278,923.20x = 4,804,482,648,603,529 - Step 5: Solve for x
x = 4,804,482,648,603,529/77,278,923.20 - Step 6: Final answer
x = 62,170,672.80
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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.