Finding the Fourth Proportional to 98,418.14, 135,824.55 and 55,974.14
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Solution
The fourth proportional to 98,418.14, 135,824.55 and 55,974.14 is: 77,248.59
Step by Step Solution
- Step 1: Write the proportion equation
98,418.14 : 135,824.55 = 55,974.14 : x - Step 2: Convert to fraction form
98,418.14/135,824.55 = 55,974.14/x - Step 3: Cross multiply
98,418.14x = 135,824.55 × 55,974.14 - Step 4: Simplify right side
98,418.14x = 7,602,662,377.14 - Step 5: Solve for x
x = 7,602,662,377.14/98,418.14 - Step 6: Final answer
x = 77,248.59
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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.