Finding the Fourth Proportional to 74,830.12, 103,266.18 and 40,838.88
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Solution
The fourth proportional to 74,830.12, 103,266.18 and 40,838.88 is: 56,357.99
Step by Step Solution
- Step 1: Write the proportion equation
74,830.12 : 103,266.18 = 40,838.88 : x - Step 2: Convert to fraction form
74,830.12/103,266.18 = 40,838.88/x - Step 3: Cross multiply
74,830.12x = 103,266.18 × 40,838.88 - Step 4: Simplify right side
74,830.12x = 4,217,275,133.08 - Step 5: Solve for x
x = 4,217,275,133.08/74,830.12 - Step 6: Final answer
x = 56,357.99
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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.