Finding the Fourth Proportional to 38,649,684.61, 53,336,737.61 and 21,247,151.05
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Solution
The fourth proportional to 38,649,684.61, 53,336,737.61 and 21,247,151.05 is: 29,321,163.47
Step by Step Solution
- Step 1: Write the proportion equation
38,649,684.61 : 53,336,737.61 = 21,247,151.05 : x - Step 2: Convert to fraction form
38,649,684.61/53,336,737.61 = 21,247,151.05/x - Step 3: Cross multiply
38,649,684.61x = 53,336,737.61 × 21,247,151.05 - Step 4: Simplify right side
38,649,684.61x = 1,133,253,720,513,886 - Step 5: Solve for x
x = 1,133,253,720,513,886/38,649,684.61 - Step 6: Final answer
x = 29,321,163.47
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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.