Finding the Fourth Proportional to 76,967.03, 106,213.47 and 42,976.08
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Solution
The fourth proportional to 76,967.03, 106,213.47 and 42,976.08 is: 59,306.42
Step by Step Solution
- Step 1: Write the proportion equation
76,967.03 : 106,213.47 = 42,976.08 : x - Step 2: Convert to fraction form
76,967.03/106,213.47 = 42,976.08/x - Step 3: Cross multiply
76,967.03x = 106,213.47 × 42,976.08 - Step 4: Simplify right side
76,967.03x = 4,564,638,583.80 - Step 5: Solve for x
x = 4,564,638,583.80/76,967.03 - Step 6: Final answer
x = 59,306.42
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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.