Finding the Fourth Proportional to 38,992,812.37, 53,811,762.71 and 21,589,157.83
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Solution
The fourth proportional to 38,992,812.37, 53,811,762.71 and 21,589,157.83 is: 29,793,968.87
Step by Step Solution
- Step 1: Write the proportion equation
38,992,812.37 : 53,811,762.71 = 21,589,157.83 : x - Step 2: Convert to fraction form
38,992,812.37/53,811,762.71 = 21,589,157.83/x - Step 3: Cross multiply
38,992,812.37x = 53,811,762.71 × 21,589,157.83 - Step 4: Simplify right side
38,992,812.37x = 1,161,750,637,879,693.75 - Step 5: Solve for x
x = 1,161,750,637,879,693.75/38,992,812.37 - Step 6: Final answer
x = 29,793,968.87
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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.