Finding the Fourth Proportional to 78,737.84, 108,630.96 and 50,459.12
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Solution
The fourth proportional to 78,737.84, 108,630.96 and 50,459.12 is: 69,616.12
Step by Step Solution
- Step 1: Write the proportion equation
78,737.84 : 108,630.96 = 50,459.12 : x - Step 2: Convert to fraction form
78,737.84/108,630.96 = 50,459.12/x - Step 3: Cross multiply
78,737.84x = 108,630.96 × 50,459.12 - Step 4: Simplify right side
78,737.84x = 5,481,422,646.36 - Step 5: Solve for x
x = 5,481,422,646.36/78,737.84 - Step 6: Final answer
x = 69,616.12
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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.