Finding the Fourth Proportional to 87,927,621.12, 121,395,162.42 and 56,620,136.52
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Solution
The fourth proportional to 87,927,621.12, 121,395,162.42 and 56,620,136.52 is: 78,171,234.27
Step by Step Solution
- Step 1: Write the proportion equation
87,927,621.12 : 121,395,162.42 = 56,620,136.52 : x - Step 2: Convert to fraction form
87,927,621.12/121,395,162.42 = 56,620,136.52/x - Step 3: Cross multiply
87,927,621.12x = 121,395,162.42 × 56,620,136.52 - Step 4: Simplify right side
87,927,621.12x = 6,873,410,669,087,974 - Step 5: Solve for x
x = 6,873,410,669,087,974/87,927,621.12 - Step 6: Final answer
x = 78,171,234.27
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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.