Finding the Fourth Proportional to 66,366,138.30, 99,549,207.45 and 55,028,730.30
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Solution
The fourth proportional to 66,366,138.30, 99,549,207.45 and 55,028,730.30 is: 82,543,095.45
Step by Step Solution
- Step 1: Write the proportion equation
66,366,138.30 : 99,549,207.45 = 55,028,730.30 : x - Step 2: Convert to fraction form
66,366,138.30/99,549,207.45 = 55,028,730.30/x - Step 3: Cross multiply
66,366,138.30x = 99,549,207.45 × 55,028,730.30 - Step 4: Simplify right side
66,366,138.30x = 5,478,066,488,344,801 - Step 5: Solve for x
x = 5,478,066,488,344,801/66,366,138.30 - Step 6: Final answer
x = 82,543,095.45
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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.