Finding the Fourth Proportional to 38,647,242.94, 53,332,880.88 and 21,243,403.12
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Solution
The fourth proportional to 38,647,242.94, 53,332,880.88 and 21,243,403.12 is: 29,315,723.50
Step by Step Solution
- Step 1: Write the proportion equation
38,647,242.94 : 53,332,880.88 = 21,243,403.12 : x - Step 2: Convert to fraction form
38,647,242.94/53,332,880.88 = 21,243,403.12/x - Step 3: Cross multiply
38,647,242.94x = 53,332,880.88 × 21,243,403.12 - Step 4: Simplify right side
38,647,242.94x = 1,132,971,888,084,780.50 - Step 5: Solve for x
x = 1,132,971,888,084,780.50/38,647,242.94 - Step 6: Final answer
x = 29,315,723.50
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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.