Finding the Fourth Proportional to 38,765,107.68, 53,496,207.36 and 21,362,075.70
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Solution
The fourth proportional to 38,765,107.68, 53,496,207.36 and 21,362,075.70 is: 29,479,862.17
Step by Step Solution
- Step 1: Write the proportion equation
38,765,107.68 : 53,496,207.36 = 21,362,075.70 : x - Step 2: Convert to fraction form
38,765,107.68/53,496,207.36 = 21,362,075.70/x - Step 3: Cross multiply
38,765,107.68x = 53,496,207.36 × 21,362,075.70 - Step 4: Simplify right side
38,765,107.68x = 1,142,790,031,287,217 - Step 5: Solve for x
x = 1,142,790,031,287,217/38,765,107.68 - Step 6: Final answer
x = 29,479,862.17
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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.