Finding the Fourth Proportional to 78,516.80, 117,730.44 and 53,587.02
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Solution
The fourth proportional to 78,516.80, 117,730.44 and 53,587.02 is: 80,349.99
Step by Step Solution
- Step 1: Write the proportion equation
78,516.80 : 117,730.44 = 53,587.02 : x - Step 2: Convert to fraction form
78,516.80/117,730.44 = 53,587.02/x - Step 3: Cross multiply
78,516.80x = 117,730.44 × 53,587.02 - Step 4: Simplify right side
78,516.80x = 6,308,823,442.89 - Step 5: Solve for x
x = 6,308,823,442.89/78,516.80 - Step 6: Final answer
x = 80,349.99
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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.