Finding the Fourth Proportional to 76,912,998.20, 115,369,497.30 and 74,225,612.60
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Solution
The fourth proportional to 76,912,998.20, 115,369,497.30 and 74,225,612.60 is: 111,338,418.90
Step by Step Solution
- Step 1: Write the proportion equation
76,912,998.20 : 115,369,497.30 = 74,225,612.60 : x - Step 2: Convert to fraction form
76,912,998.20/115,369,497.30 = 74,225,612.60/x - Step 3: Cross multiply
76,912,998.20x = 115,369,497.30 × 74,225,612.60 - Step 4: Simplify right side
76,912,998.20x = 8,563,371,612,446,545 - Step 5: Solve for x
x = 8,563,371,612,446,545/76,912,998.20 - Step 6: Final answer
x = 111,338,418.90
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1.5x scale
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.