Finding the Fourth Proportional to 84,871.68, 117,118.35 and 47,143.50
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Solution
The fourth proportional to 84,871.68, 117,118.35 and 47,143.50 is: 65,055.49
Step by Step Solution
- Step 1: Write the proportion equation
84,871.68 : 117,118.35 = 47,143.50 : x - Step 2: Convert to fraction form
84,871.68/117,118.35 = 47,143.50/x - Step 3: Cross multiply
84,871.68x = 117,118.35 × 47,143.50 - Step 4: Simplify right side
84,871.68x = 5,521,368,933.23 - Step 5: Solve for x
x = 5,521,368,933.23/84,871.68 - Step 6: Final answer
x = 65,055.49
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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.