Finding the Fourth Proportional to 38,637,991.62, 53,321,706.81 and 21,234,953.70
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Solution
The fourth proportional to 38,637,991.62, 53,321,706.81 and 21,234,953.70 is: 29,304,938.68
Step by Step Solution
- Step 1: Write the proportion equation
38,637,991.62 : 53,321,706.81 = 21,234,953.70 : x - Step 2: Convert to fraction form
38,637,991.62/53,321,706.81 = 21,234,953.70/x - Step 3: Cross multiply
38,637,991.62x = 53,321,706.81 × 21,234,953.70 - Step 4: Simplify right side
38,637,991.62x = 1,132,283,975,315,324.75 - Step 5: Solve for x
x = 1,132,283,975,315,324.75/38,637,991.62 - Step 6: Final answer
x = 29,304,938.68
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1.5x scale
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.