Finding the Fourth Proportional to 74,506.08, 102,816.36 and 40,972.08
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Solution
The fourth proportional to 74,506.08, 102,816.36 and 40,972.08 is: 56,540.35
Step by Step Solution
- Step 1: Write the proportion equation
74,506.08 : 102,816.36 = 40,972.08 : x - Step 2: Convert to fraction form
74,506.08/102,816.36 = 40,972.08/x - Step 3: Cross multiply
74,506.08x = 102,816.36 × 40,972.08 - Step 4: Simplify right side
74,506.08x = 4,212,600,127.23 - Step 5: Solve for x
x = 4,212,600,127.23/74,506.08 - Step 6: Final answer
x = 56,540.35
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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.