Finding the Fourth Proportional to 79,731,206.40, 119,596,809.60 and 39,420,422.40
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Solution
The fourth proportional to 79,731,206.40, 119,596,809.60 and 39,420,422.40 is: 59,130,633.60
Step by Step Solution
- Step 1: Write the proportion equation
79,731,206.40 : 119,596,809.60 = 39,420,422.40 : x - Step 2: Convert to fraction form
79,731,206.40/119,596,809.60 = 39,420,422.40/x - Step 3: Cross multiply
79,731,206.40x = 119,596,809.60 × 39,420,422.40 - Step 4: Simplify right side
79,731,206.40x = 4,714,556,752,124,375 - Step 5: Solve for x
x = 4,714,556,752,124,375/79,731,206.40 - Step 6: Final answer
x = 59,130,633.60
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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.