Finding the Fourth Proportional to 38,709,405.81, 53,418,569.13 and 21,305,377.36
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Solution
The fourth proportional to 38,709,405.81, 53,418,569.13 and 21,305,377.36 is: 29,401,194.60
Step by Step Solution
- Step 1: Write the proportion equation
38,709,405.81 : 53,418,569.13 = 21,305,377.36 : x - Step 2: Convert to fraction form
38,709,405.81/53,418,569.13 = 21,305,377.36/x - Step 3: Cross multiply
38,709,405.81x = 53,418,569.13 × 21,305,377.36 - Step 4: Simplify right side
38,709,405.81x = 1,138,102,773,212,350.75 - Step 5: Solve for x
x = 1,138,102,773,212,350.75/38,709,405.81 - Step 6: Final answer
x = 29,401,194.60
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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.