Finding the Fourth Proportional to 76,902.76, 106,133.12 and 46,681.14
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Solution
The fourth proportional to 76,902.76, 106,133.12 and 46,681.14 is: 64,424.40
Step by Step Solution
- Step 1: Write the proportion equation
76,902.76 : 106,133.12 = 46,681.14 : x - Step 2: Convert to fraction form
76,902.76/106,133.12 = 46,681.14/x - Step 3: Cross multiply
76,902.76x = 106,133.12 × 46,681.14 - Step 4: Simplify right side
76,902.76x = 4,954,414,269.29 - Step 5: Solve for x
x = 4,954,414,269.29/76,902.76 - Step 6: Final answer
x = 64,424.40
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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.