Finding the Fourth Proportional to 85,860,498.45, 128,790,747.68 and 51,423,121.65
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Solution
The fourth proportional to 85,860,498.45, 128,790,747.68 and 51,423,121.65 is: 77,134,682.48
Step by Step Solution
- Step 1: Write the proportion equation
85,860,498.45 : 128,790,747.68 = 51,423,121.65 : x - Step 2: Convert to fraction form
85,860,498.45/128,790,747.68 = 51,423,121.65/x - Step 3: Cross multiply
85,860,498.45x = 128,790,747.68 × 51,423,121.65 - Step 4: Simplify right side
85,860,498.45x = 6,622,822,285,085,979 - Step 5: Solve for x
x = 6,622,822,285,085,979/85,860,498.45 - Step 6: Final answer
x = 77,134,682.48
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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.