Finding the Fourth Proportional to 112,943.71, 169,380.21 and 40,887.53
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Solution
The fourth proportional to 112,943.71, 169,380.21 and 40,887.53 is: 61,318.49
Step by Step Solution
- Step 1: Write the proportion equation
112,943.71 : 169,380.21 = 40,887.53 : x - Step 2: Convert to fraction form
112,943.71/169,380.21 = 40,887.53/x - Step 3: Cross multiply
112,943.71x = 169,380.21 × 40,887.53 - Step 4: Simplify right side
112,943.71x = 6,925,538,359.38 - Step 5: Solve for x
x = 6,925,538,359.38/112,943.71 - Step 6: Final answer
x = 61,318.49
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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.