Finding the Fourth Proportional to 45,798,897.60, 68,729,839.20 and 18,872,553.60
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Solution
The fourth proportional to 45,798,897.60, 68,729,839.20 and 18,872,553.60 is: 28,321,807.78
Step by Step Solution
- Step 1: Write the proportion equation
45,798,897.60 : 68,729,839.20 = 18,872,553.60 : x - Step 2: Convert to fraction form
45,798,897.60/68,729,839.20 = 18,872,553.60/x - Step 3: Cross multiply
45,798,897.60x = 68,729,839.20 × 18,872,553.60 - Step 4: Simplify right side
45,798,897.60x = 1,297,107,574,221,381.25 - Step 5: Solve for x
x = 1,297,107,574,221,381.25/45,798,897.60 - Step 6: Final answer
x = 28,321,807.78
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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.