Finding the Fourth Proportional to 74,263.15, 102,489.63 and 40,735.63
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Solution
The fourth proportional to 74,263.15, 102,489.63 and 40,735.63 is: 56,218.72
Step by Step Solution
- Step 1: Write the proportion equation
74,263.15 : 102,489.63 = 40,735.63 : x - Step 2: Convert to fraction form
74,263.15/102,489.63 = 40,735.63/x - Step 3: Cross multiply
74,263.15x = 102,489.63 × 40,735.63 - Step 4: Simplify right side
74,263.15x = 4,174,979,621.87 - Step 5: Solve for x
x = 4,174,979,621.87/74,263.15 - Step 6: Final answer
x = 56,218.72
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1.5x scale
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.