Finding the Fourth Proportional to 38,715,966.32, 53,428,712.99 and 21,075,376.05
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Solution
The fourth proportional to 38,715,966.32, 53,428,712.99 and 21,075,376.05 is: 29,084,388.82
Step by Step Solution
- Step 1: Write the proportion equation
38,715,966.32 : 53,428,712.99 = 21,075,376.05 : x - Step 2: Convert to fraction form
38,715,966.32/53,428,712.99 = 21,075,376.05/x - Step 3: Cross multiply
38,715,966.32x = 53,428,712.99 × 21,075,376.05 - Step 4: Simplify right side
38,715,966.32x = 1,126,030,218,026,393 - Step 5: Solve for x
x = 1,126,030,218,026,393/38,715,966.32 - Step 6: Final answer
x = 29,084,388.82
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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.