Finding the Fourth Proportional to 98,316.74, 135,677.14 and 55,874.18
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Solution
The fourth proportional to 98,316.74, 135,677.14 and 55,874.18 is: 77,106.39
Step by Step Solution
- Step 1: Write the proportion equation
98,316.74 : 135,677.14 = 55,874.18 : x - Step 2: Convert to fraction form
98,316.74/135,677.14 = 55,874.18/x - Step 3: Cross multiply
98,316.74x = 135,677.14 × 55,874.18 - Step 4: Simplify right side
98,316.74x = 7,580,848,942.25 - Step 5: Solve for x
x = 7,580,848,942.25/98,316.74 - Step 6: Final answer
x = 77,106.39
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1.5x scale
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.