Finding the Fourth Proportional to 38,691,313.74, 53,394,840 and 21,287,709
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Solution
The fourth proportional to 38,691,313.74, 53,394,840 and 21,287,709 is: 29,377,493.45
Step by Step Solution
- Step 1: Write the proportion equation
38,691,313.74 : 53,394,840 = 21,287,709 : x - Step 2: Convert to fraction form
38,691,313.74/53,394,840 = 21,287,709/x - Step 3: Cross multiply
38,691,313.74x = 53,394,840 × 21,287,709 - Step 4: Simplify right side
38,691,313.74x = 1,136,653,816,021,560 - Step 5: Solve for x
x = 1,136,653,816,021,560/38,691,313.74 - Step 6: Final answer
x = 29,377,493.45
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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.