Finding the Fourth Proportional to 66,515,468.70, 99,773,203.05 and 43,821,990.30
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Solution
The fourth proportional to 66,515,468.70, 99,773,203.05 and 43,821,990.30 is: 65,732,985.45
Step by Step Solution
- Step 1: Write the proportion equation
66,515,468.70 : 99,773,203.05 = 43,821,990.30 : x - Step 2: Convert to fraction form
66,515,468.70/99,773,203.05 = 43,821,990.30/x - Step 3: Cross multiply
66,515,468.70x = 99,773,203.05 × 43,821,990.30 - Step 4: Simplify right side
66,515,468.70x = 4,372,260,336,257,030 - Step 5: Solve for x
x = 4,372,260,336,257,030/66,515,468.70 - Step 6: Final answer
x = 65,732,985.45
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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.