Finding the Fourth Proportional to 74,622.64, 102,981.08 and 40,632.99
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Solution
The fourth proportional to 74,622.64, 102,981.08 and 40,632.99 is: 56,074.52
Step by Step Solution
- Step 1: Write the proportion equation
74,622.64 : 102,981.08 = 40,632.99 : x - Step 2: Convert to fraction form
74,622.64/102,981.08 = 40,632.99/x - Step 3: Cross multiply
74,622.64x = 102,981.08 × 40,632.99 - Step 4: Simplify right side
74,622.64x = 4,184,428,909.23 - Step 5: Solve for x
x = 4,184,428,909.23/74,622.64 - Step 6: Final answer
x = 56,074.52
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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.