Finding the Fourth Proportional to 72,781,201.74, 100,438,543.96 and 39,741,680.28
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Solution
The fourth proportional to 72,781,201.74, 100,438,543.96 and 39,741,680.28 is: 54,843,783.92
Step by Step Solution
- Step 1: Write the proportion equation
72,781,201.74 : 100,438,543.96 = 39,741,680.28 : x - Step 2: Convert to fraction form
72,781,201.74/100,438,543.96 = 39,741,680.28/x - Step 3: Cross multiply
72,781,201.74x = 100,438,543.96 × 39,741,680.28 - Step 4: Simplify right side
72,781,201.74x = 3,991,596,501,847,045 - Step 5: Solve for x
x = 3,991,596,501,847,045/72,781,201.74 - Step 6: Final answer
x = 54,843,783.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.