Finding the Fourth Proportional to 84,402.59, 116,420.70 and 54,139.99
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Solution
The fourth proportional to 84,402.59, 116,420.70 and 54,139.99 is: 74,677.98
Step by Step Solution
- Step 1: Write the proportion equation
84,402.59 : 116,420.70 = 54,139.99 : x - Step 2: Convert to fraction form
84,402.59/116,420.70 = 54,139.99/x - Step 3: Cross multiply
84,402.59x = 116,420.70 × 54,139.99 - Step 4: Simplify right side
84,402.59x = 6,303,014,951.69 - Step 5: Solve for x
x = 6,303,014,951.69/84,402.59 - Step 6: Final answer
x = 74,677.98
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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.