Finding the Fourth Proportional to 83,918.84, 115,801.65 and 48,103.07
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Solution
The fourth proportional to 83,918.84, 115,801.65 and 48,103.07 is: 66,378.59
Step by Step Solution
- Step 1: Write the proportion equation
83,918.84 : 115,801.65 = 48,103.07 : x - Step 2: Convert to fraction form
83,918.84/115,801.65 = 48,103.07/x - Step 3: Cross multiply
83,918.84x = 115,801.65 × 48,103.07 - Step 4: Simplify right side
83,918.84x = 5,570,414,297.06 - Step 5: Solve for x
x = 5,570,414,297.06/83,918.84 - Step 6: Final answer
x = 66,378.59
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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.