Finding the Fourth Proportional to 20,787,218.19, 31,180,302.41 and 5,640,756.03
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Solution
The fourth proportional to 20,787,218.19, 31,180,302.41 and 5,640,756.03 is: 8,460,991.62
Step by Step Solution
- Step 1: Write the proportion equation
20,787,218.19 : 31,180,302.41 = 5,640,756.03 : x - Step 2: Convert to fraction form
20,787,218.19/31,180,302.41 = 5,640,756.03/x - Step 3: Cross multiply
20,787,218.19x = 31,180,302.41 × 5,640,756.03 - Step 4: Simplify right side
20,787,218.19x = 175,880,478,808,227.28 - Step 5: Solve for x
x = 175,880,478,808,227.28/20,787,218.19 - Step 6: Final answer
x = 8,460,991.62
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.