Finding the Fourth Proportional to 77,490.84, 106,665.33 and 67,908.15
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Solution
The fourth proportional to 77,490.84, 106,665.33 and 67,908.15 is: 93,474.86
Step by Step Solution
- Step 1: Write the proportion equation
77,490.84 : 106,665.33 = 67,908.15 : x - Step 2: Convert to fraction form
77,490.84/106,665.33 = 67,908.15/x - Step 3: Cross multiply
77,490.84x = 106,665.33 × 67,908.15 - Step 4: Simplify right side
77,490.84x = 7,243,445,229.44 - Step 5: Solve for x
x = 7,243,445,229.44/77,490.84 - Step 6: Final answer
x = 93,474.86
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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.