Finding the Fourth Proportional to 77,264,997.60, 115,897,496.40 and 19,761,769.20
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Solution
The fourth proportional to 77,264,997.60, 115,897,496.40 and 19,761,769.20 is: 29,642,653.80
Step by Step Solution
- Step 1: Write the proportion equation
77,264,997.60 : 115,897,496.40 = 19,761,769.20 : x - Step 2: Convert to fraction form
77,264,997.60/115,897,496.40 = 19,761,769.20/x - Step 3: Cross multiply
77,264,997.60x = 115,897,496.40 × 19,761,769.20 - Step 4: Simplify right side
77,264,997.60x = 2,290,339,574,714,631 - Step 5: Solve for x
x = 2,290,339,574,714,631/77,264,997.60 - Step 6: Final answer
x = 29,642,653.80
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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.