Finding the Fourth Proportional to 99,585.18, 137,426.31 and 54,261.99
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Solution
The fourth proportional to 99,585.18, 137,426.31 and 54,261.99 is: 74,880.87
Step by Step Solution
- Step 1: Write the proportion equation
99,585.18 : 137,426.31 = 54,261.99 : x - Step 2: Convert to fraction form
99,585.18/137,426.31 = 54,261.99/x - Step 3: Cross multiply
99,585.18x = 137,426.31 × 54,261.99 - Step 4: Simplify right side
99,585.18x = 7,457,025,058.96 - Step 5: Solve for x
x = 7,457,025,058.96/99,585.18 - Step 6: Final answer
x = 74,880.87
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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.