Finding the Fourth Proportional to 73,993,921.20, 110,990,881.80 and 72,718,462.80
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Solution
The fourth proportional to 73,993,921.20, 110,990,881.80 and 72,718,462.80 is: 109,077,694.20
Step by Step Solution
- Step 1: Write the proportion equation
73,993,921.20 : 110,990,881.80 = 72,718,462.80 : x - Step 2: Convert to fraction form
73,993,921.20/110,990,881.80 = 72,718,462.80/x - Step 3: Cross multiply
73,993,921.20x = 110,990,881.80 × 72,718,462.80 - Step 4: Simplify right side
73,993,921.20x = 8,071,086,309,312,496 - Step 5: Solve for x
x = 8,071,086,309,312,496/73,993,921.20 - Step 6: Final answer
x = 109,077,694.20
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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.