Finding the Fourth Proportional to 66,142,344.13, 99,207,100.99 and 20,084,612.56
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Solution
The fourth proportional to 66,142,344.13, 99,207,100.99 and 20,084,612.56 is: 30,124,970.82
Step by Step Solution
- Step 1: Write the proportion equation
66,142,344.13 : 99,207,100.99 = 20,084,612.56 : x - Step 2: Convert to fraction form
66,142,344.13/99,207,100.99 = 20,084,612.56/x - Step 3: Cross multiply
66,142,344.13x = 99,207,100.99 × 20,084,612.56 - Step 4: Simplify right side
66,142,344.13x = 1,992,536,186,584,942.25 - Step 5: Solve for x
x = 1,992,536,186,584,942.25/66,142,344.13 - Step 6: Final answer
x = 30,124,970.82
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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.