Finding the Fourth Proportional to 78,983.42, 118,508.09 and 34,641.99
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Solution
The fourth proportional to 78,983.42, 118,508.09 and 34,641.99 is: 51,977.44
Step by Step Solution
- Step 1: Write the proportion equation
78,983.42 : 118,508.09 = 34,641.99 : x - Step 2: Convert to fraction form
78,983.42/118,508.09 = 34,641.99/x - Step 3: Cross multiply
78,983.42x = 118,508.09 × 34,641.99 - Step 4: Simplify right side
78,983.42x = 4,105,355,895.49 - Step 5: Solve for x
x = 4,105,355,895.49/78,983.42 - Step 6: Final answer
x = 51,977.44
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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.