Finding the Fourth Proportional to 38,688,067.76, 53,389,453.68 and 21,284,371.28
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Solution
The fourth proportional to 38,688,067.76, 53,389,453.68 and 21,284,371.28 is: 29,372,388.45
Step by Step Solution
- Step 1: Write the proportion equation
38,688,067.76 : 53,389,453.68 = 21,284,371.28 : x - Step 2: Convert to fraction form
38,688,067.76/53,389,453.68 = 21,284,371.28/x - Step 3: Cross multiply
38,688,067.76x = 53,389,453.68 × 21,284,371.28 - Step 4: Simplify right side
38,688,067.76x = 1,136,360,954,561,482.25 - Step 5: Solve for x
x = 1,136,360,954,561,482.25/38,688,067.76 - Step 6: Final answer
x = 29,372,388.45
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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.