Finding the Fourth Proportional to 38,487,708.09, 53,112,613.88 and 20,846,171.75
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Solution
The fourth proportional to 38,487,708.09, 53,112,613.88 and 20,846,171.75 is: 28,767,487.75
Step by Step Solution
- Step 1: Write the proportion equation
38,487,708.09 : 53,112,613.88 = 20,846,171.75 : x - Step 2: Convert to fraction form
38,487,708.09/53,112,613.88 = 20,846,171.75/x - Step 3: Cross multiply
38,487,708.09x = 53,112,613.88 × 20,846,171.75 - Step 4: Simplify right side
38,487,708.09x = 1,107,194,670,820,466.25 - Step 5: Solve for x
x = 1,107,194,670,820,466.25/38,487,708.09 - Step 6: Final answer
x = 28,767,487.75
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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.