Finding the Fourth Proportional to 85,850,273.61, 128,828,378.21 and 39,783,556.09
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Solution
The fourth proportional to 85,850,273.61, 128,828,378.21 and 39,783,556.09 is: 59,699,879.74
Step by Step Solution
- Step 1: Write the proportion equation
85,850,273.61 : 128,828,378.21 = 39,783,556.09 : x - Step 2: Convert to fraction form
85,850,273.61/128,828,378.21 = 39,783,556.09/x - Step 3: Cross multiply
85,850,273.61x = 128,828,378.21 × 39,783,556.09 - Step 4: Simplify right side
85,850,273.61x = 5,125,251,010,501,269 - Step 5: Solve for x
x = 5,125,251,010,501,269/85,850,273.61 - Step 6: Final answer
x = 59,699,879.74
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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.