Finding the Fourth Proportional to 74,475.13, 102,776.21 and 40,483.63
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Solution
The fourth proportional to 74,475.13, 102,776.21 and 40,483.63 is: 55,867.70
Step by Step Solution
- Step 1: Write the proportion equation
74,475.13 : 102,776.21 = 40,483.63 : x - Step 2: Convert to fraction form
74,475.13/102,776.21 = 40,483.63/x - Step 3: Cross multiply
74,475.13x = 102,776.21 × 40,483.63 - Step 4: Simplify right side
74,475.13x = 4,160,753,856.02 - Step 5: Solve for x
x = 4,160,753,856.02/74,475.13 - Step 6: Final answer
x = 55,867.70
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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.