Finding the Fourth Proportional to 66,415,879.40, 99,698,468.70 and 51,336,660.20
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Solution
The fourth proportional to 66,415,879.40, 99,698,468.70 and 51,336,660.20 is: 77,062,691.28
Step by Step Solution
- Step 1: Write the proportion equation
66,415,879.40 : 99,698,468.70 = 51,336,660.20 : x - Step 2: Convert to fraction form
66,415,879.40/99,698,468.70 = 51,336,660.20/x - Step 3: Cross multiply
66,415,879.40x = 99,698,468.70 × 51,336,660.20 - Step 4: Simplify right side
66,415,879.40x = 5,118,186,410,112,236 - Step 5: Solve for x
x = 5,118,186,410,112,236/66,415,879.40 - Step 6: Final answer
x = 77,062,691.28
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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.