Finding the Fourth Proportional to 78,624,154.80, 117,936,232.20 and 64,753,544.70
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Solution
The fourth proportional to 78,624,154.80, 117,936,232.20 and 64,753,544.70 is: 97,130,317.05
Step by Step Solution
- Step 1: Write the proportion equation
78,624,154.80 : 117,936,232.20 = 64,753,544.70 : x - Step 2: Convert to fraction form
78,624,154.80/117,936,232.20 = 64,753,544.70/x - Step 3: Cross multiply
78,624,154.80x = 117,936,232.20 × 64,753,544.70 - Step 4: Simplify right side
78,624,154.80x = 7,636,789,083,512,280 - Step 5: Solve for x
x = 7,636,789,083,512,280/78,624,154.80 - Step 6: Final answer
x = 97,130,317.05
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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.