Finding the Fourth Proportional to 67,278.98, 100,883.42 and 31,730.75
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Solution
The fourth proportional to 67,278.98, 100,883.42 and 31,730.75 is: 47,579.59
Step by Step Solution
- Step 1: Write the proportion equation
67,278.98 : 100,883.42 = 31,730.75 : x - Step 2: Convert to fraction form
67,278.98/100,883.42 = 31,730.75/x - Step 3: Cross multiply
67,278.98x = 100,883.42 × 31,730.75 - Step 4: Simplify right side
67,278.98x = 3,201,105,916.09 - Step 5: Solve for x
x = 3,201,105,916.09/67,278.98 - Step 6: Final answer
x = 47,579.59
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1.5x scale
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.