Finding the Fourth Proportional to 93,838.40, 129,485.16 and 74,766.56
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Solution
The fourth proportional to 93,838.40, 129,485.16 and 74,766.56 is: 103,168.43
Step by Step Solution
- Step 1: Write the proportion equation
93,838.40 : 129,485.16 = 74,766.56 : x - Step 2: Convert to fraction form
93,838.40/129,485.16 = 74,766.56/x - Step 3: Cross multiply
93,838.40x = 129,485.16 × 74,766.56 - Step 4: Simplify right side
93,838.40x = 9,681,159,984.25 - Step 5: Solve for x
x = 9,681,159,984.25/93,838.40 - Step 6: Final answer
x = 103,168.43
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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.