Finding the Fourth Proportional to 66,438,751.20, 99,672,123.60 and 28,080,520.80
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Solution
The fourth proportional to 66,438,751.20, 99,672,123.60 and 28,080,520.80 is: 42,126,696.99
Step by Step Solution
- Step 1: Write the proportion equation
66,438,751.20 : 99,672,123.60 = 28,080,520.80 : x - Step 2: Convert to fraction form
66,438,751.20/99,672,123.60 = 28,080,520.80/x - Step 3: Cross multiply
66,438,751.20x = 99,672,123.60 × 28,080,520.80 - Step 4: Simplify right side
66,438,751.20x = 2,798,845,139,929,971 - Step 5: Solve for x
x = 2,798,845,139,929,971/66,438,751.20 - Step 6: Final answer
x = 42,126,696.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.