Finding the Fourth Proportional to 74,439.88, 102,727.44 and 40,448.63
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Solution
The fourth proportional to 74,439.88, 102,727.44 and 40,448.63 is: 55,819.34
Step by Step Solution
- Step 1: Write the proportion equation
74,439.88 : 102,727.44 = 40,448.63 : x - Step 2: Convert to fraction form
74,439.88/102,727.44 = 40,448.63/x - Step 3: Cross multiply
74,439.88x = 102,727.44 × 40,448.63 - Step 4: Simplify right side
74,439.88x = 4,155,184,468.23 - Step 5: Solve for x
x = 4,155,184,468.23/74,439.88 - Step 6: Final answer
x = 55,819.34
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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.