Finding the Fourth Proportional to 104,631.71, 144,391.05 and 56,885.06
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Solution
The fourth proportional to 104,631.71, 144,391.05 and 56,885.06 is: 78,500.99
Step by Step Solution
- Step 1: Write the proportion equation
104,631.71 : 144,391.05 = 56,885.06 : x - Step 2: Convert to fraction form
104,631.71/144,391.05 = 56,885.06/x - Step 3: Cross multiply
104,631.71x = 144,391.05 × 56,885.06 - Step 4: Simplify right side
104,631.71x = 8,213,693,110.63 - Step 5: Solve for x
x = 8,213,693,110.63/104,631.71 - Step 6: Final answer
x = 78,500.99
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1.5x scale
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.