Finding the Fourth Proportional to 28,431,036.53, 42,646,554.79 and 18,857,225.33
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Solution
The fourth proportional to 28,431,036.53, 42,646,554.79 and 18,857,225.33 is: 28,285,837.99
Step by Step Solution
- Step 1: Write the proportion equation
28,431,036.53 : 42,646,554.79 = 18,857,225.33 : x - Step 2: Convert to fraction form
28,431,036.53/42,646,554.79 = 18,857,225.33/x - Step 3: Cross multiply
28,431,036.53x = 42,646,554.79 × 18,857,225.33 - Step 4: Simplify right side
28,431,036.53x = 804,195,692,962,845 - Step 5: Solve for x
x = 804,195,692,962,845/28,431,036.53 - Step 6: Final answer
x = 28,285,837.99
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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.