Finding the Fourth Proportional to 71,848.97, 107,868.84 and 61,386.20
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Solution
The fourth proportional to 71,848.97, 107,868.84 and 61,386.20 is: 92,160.79
Step by Step Solution
- Step 1: Write the proportion equation
71,848.97 : 107,868.84 = 61,386.20 : x - Step 2: Convert to fraction form
71,848.97/107,868.84 = 61,386.20/x - Step 3: Cross multiply
71,848.97x = 107,868.84 × 61,386.20 - Step 4: Simplify right side
71,848.97x = 6,621,657,646.66 - Step 5: Solve for x
x = 6,621,657,646.66/71,848.97 - Step 6: Final answer
x = 92,160.79
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.