Finding the Fourth Proportional to 75,428.01, 104,812.38 and 74,607.84
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Solution
The fourth proportional to 75,428.01, 104,812.38 and 74,607.84 is: 103,672.70
Step by Step Solution
- Step 1: Write the proportion equation
75,428.01 : 104,812.38 = 74,607.84 : x - Step 2: Convert to fraction form
75,428.01/104,812.38 = 74,607.84/x - Step 3: Cross multiply
75,428.01x = 104,812.38 × 74,607.84 - Step 4: Simplify right side
75,428.01x = 7,819,825,277.06 - Step 5: Solve for x
x = 7,819,825,277.06/75,428.01 - Step 6: Final answer
x = 103,672.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.