Finding the Fourth Proportional to 128,899,879.88, 193,347,922.58 and 31,855,582.13
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Solution
The fourth proportional to 128,899,879.88, 193,347,922.58 and 31,855,582.13 is: 47,782,904.32
Step by Step Solution
- Step 1: Write the proportion equation
128,899,879.88 : 193,347,922.58 = 31,855,582.13 : x - Step 2: Convert to fraction form
128,899,879.88/193,347,922.58 = 31,855,582.13/x - Step 3: Cross multiply
128,899,879.88x = 193,347,922.58 × 31,855,582.13 - Step 4: Simplify right side
128,899,879.88x = 6,159,210,627,252,793 - Step 5: Solve for x
x = 6,159,210,627,252,793/128,899,879.88 - Step 6: Final answer
x = 47,782,904.32
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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.