Finding the Fourth Proportional to 8,108,738.12, 11,185,193.40 and 5,355,430.94
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Solution
The fourth proportional to 8,108,738.12, 11,185,193.40 and 5,355,430.94 is: 7,387,281.46
Step by Step Solution
- Step 1: Write the proportion equation
8,108,738.12 : 11,185,193.40 = 5,355,430.94 : x - Step 2: Convert to fraction form
8,108,738.12/11,185,193.40 = 5,355,430.94/x - Step 3: Cross multiply
8,108,738.12x = 11,185,193.40 × 5,355,430.94 - Step 4: Simplify right side
8,108,738.12x = 59,901,530,804,243.80 - Step 5: Solve for x
x = 59,901,530,804,243.80/8,108,738.12 - Step 6: Final answer
x = 7,387,281.46
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.