Finding the Fourth Proportional to 77,201,261.31, 115,805,616.41 and 25,384,716.84
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Solution
The fourth proportional to 77,201,261.31, 115,805,616.41 and 25,384,716.84 is: 38,078,299.90
Step by Step Solution
- Step 1: Write the proportion equation
77,201,261.31 : 115,805,616.41 = 25,384,716.84 : x - Step 2: Convert to fraction form
77,201,261.31/115,805,616.41 = 25,384,716.84/x - Step 3: Cross multiply
77,201,261.31x = 115,805,616.41 × 25,384,716.84 - Step 4: Simplify right side
77,201,261.31x = 2,939,692,781,049,507 - Step 5: Solve for x
x = 2,939,692,781,049,507/77,201,261.31 - Step 6: Final answer
x = 38,078,299.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.