Finding the Fourth Proportional to 40,420,383.70, 60,639,432.90 and 19,959,905.20
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Solution
The fourth proportional to 40,420,383.70, 60,639,432.90 and 19,959,905.20 is: 29,944,231.63
Step by Step Solution
- Step 1: Write the proportion equation
40,420,383.70 : 60,639,432.90 = 19,959,905.20 : x - Step 2: Convert to fraction form
40,420,383.70/60,639,432.90 = 19,959,905.20/x - Step 3: Cross multiply
40,420,383.70x = 60,639,432.90 × 19,959,905.20 - Step 4: Simplify right side
40,420,383.70x = 1,210,357,332,065,761 - Step 5: Solve for x
x = 1,210,357,332,065,761/40,420,383.70 - Step 6: Final answer
x = 29,944,231.63
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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.