Finding the Fourth Proportional to 99,708,879.15, 137,621,211.98 and 58,469,057.55
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Solution
The fourth proportional to 99,708,879.15, 137,621,211.98 and 58,469,057.55 is: 80,700,762.38
Step by Step Solution
- Step 1: Write the proportion equation
99,708,879.15 : 137,621,211.98 = 58,469,057.55 : x - Step 2: Convert to fraction form
99,708,879.15/137,621,211.98 = 58,469,057.55/x - Step 3: Cross multiply
99,708,879.15x = 137,621,211.98 × 58,469,057.55 - Step 4: Simplify right side
99,708,879.15x = 8,046,582,563,067,023 - Step 5: Solve for x
x = 8,046,582,563,067,023/99,708,879.15 - Step 6: Final answer
x = 80,700,762.38
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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.