Finding the Fourth Proportional to 84,990.36, 117,281.88 and 47,263.80
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Solution
The fourth proportional to 84,990.36, 117,281.88 and 47,263.80 is: 65,221.37
Step by Step Solution
- Step 1: Write the proportion equation
84,990.36 : 117,281.88 = 47,263.80 : x - Step 2: Convert to fraction form
84,990.36/117,281.88 = 47,263.80/x - Step 3: Cross multiply
84,990.36x = 117,281.88 × 47,263.80 - Step 4: Simplify right side
84,990.36x = 5,543,187,319.94 - Step 5: Solve for x
x = 5,543,187,319.94/84,990.36 - Step 6: Final answer
x = 65,221.37
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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.