Finding the Fourth Proportional to 72,321,202.16, 99,803,991.36 and 39,282,096.44
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Solution
The fourth proportional to 72,321,202.16, 99,803,991.36 and 39,282,096.44 is: 54,209,690.89
Step by Step Solution
- Step 1: Write the proportion equation
72,321,202.16 : 99,803,991.36 = 39,282,096.44 : x - Step 2: Convert to fraction form
72,321,202.16/99,803,991.36 = 39,282,096.44/x - Step 3: Cross multiply
72,321,202.16x = 99,803,991.36 × 39,282,096.44 - Step 4: Simplify right side
72,321,202.16x = 3,920,510,013,700,446.50 - Step 5: Solve for x
x = 3,920,510,013,700,446.50/72,321,202.16 - Step 6: Final answer
x = 54,209,690.89
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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.