Finding the Fourth Proportional to 66,430,901.80, 99,646,352.70 and 18,561,845.80
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Solution
The fourth proportional to 66,430,901.80, 99,646,352.70 and 18,561,845.80 is: 27,842,768.70
Step by Step Solution
- Step 1: Write the proportion equation
66,430,901.80 : 99,646,352.70 = 18,561,845.80 : x - Step 2: Convert to fraction form
66,430,901.80/99,646,352.70 = 18,561,845.80/x - Step 3: Cross multiply
66,430,901.80x = 99,646,352.70 × 18,561,845.80 - Step 4: Simplify right side
66,430,901.80x = 1,849,620,233,349,813.75 - Step 5: Solve for x
x = 1,849,620,233,349,813.75/66,430,901.80 - Step 6: Final answer
x = 27,842,768.70
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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.