Finding the Fourth Proportional to 12,154,965.87, 18,225,718.05 and 4,971,544.23
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Solution
The fourth proportional to 12,154,965.87, 18,225,718.05 and 4,971,544.23 is: 7,454,563.38
Step by Step Solution
- Step 1: Write the proportion equation
12,154,965.87 : 18,225,718.05 = 4,971,544.23 : x - Step 2: Convert to fraction form
12,154,965.87/18,225,718.05 = 4,971,544.23/x - Step 3: Cross multiply
12,154,965.87x = 18,225,718.05 × 4,971,544.23 - Step 4: Simplify right side
12,154,965.87x = 90,609,963,409,084.36 - Step 5: Solve for x
x = 90,609,963,409,084.36/12,154,965.87 - Step 6: Final answer
x = 7,454,563.38
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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.