Finding the Fourth Proportional to 109,927.80, 164,891.70 and 39,781.80
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Solution
The fourth proportional to 109,927.80, 164,891.70 and 39,781.80 is: 59,672.70
Step by Step Solution
- Step 1: Write the proportion equation
109,927.80 : 164,891.70 = 39,781.80 : x - Step 2: Convert to fraction form
109,927.80/164,891.70 = 39,781.80/x - Step 3: Cross multiply
109,927.80x = 164,891.70 × 39,781.80 - Step 4: Simplify right side
109,927.80x = 6,559,688,631.06 - Step 5: Solve for x
x = 6,559,688,631.06/109,927.80 - Step 6: Final answer
x = 59,672.70
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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.