Finding the Fourth Proportional to 77,110.25, 106,438.95 and 52,991.09
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Solution
The fourth proportional to 77,110.25, 106,438.95 and 52,991.09 is: 73,146.12
Step by Step Solution
- Step 1: Write the proportion equation
77,110.25 : 106,438.95 = 52,991.09 : x - Step 2: Convert to fraction form
77,110.25/106,438.95 = 52,991.09/x - Step 3: Cross multiply
77,110.25x = 106,438.95 × 52,991.09 - Step 4: Simplify right side
77,110.25x = 5,640,315,446.76 - Step 5: Solve for x
x = 5,640,315,446.76/77,110.25 - Step 6: Final answer
x = 73,146.12
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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.